Chapter stringclasses 6 values | Reference stringlengths 1 17 | Body stringlengths 62 23.1k | URL stringlengths 26 42 |
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Chapter 3 Wiring Methods and Materials | 394.23(B) | Conductors shall be installed along the sides of or through bored holes in floor joists, studs, or rafters. Exception: In buildings completed before the wiring is installed, attic and roof spaces that are not accessible by stairway or permanent ladder and have headroom at all points less than 900 mm (3 ft), the wiring shall be permitted to be installed on the edges of rafters or joists facing the attic or roof space. [394.23(B)](https://2023.antflix.net#394.23(B)) | https://2023.antflix.net#394.23(B) |
Chapter 3 Wiring Methods and Materials | 394.30(A) | Conductors shall be rigidly supported on noncombustible, nonabsorbent insulating materials and shall not contact any other objects. Supports shall be installed as follows: Within 150 mm (6 in.) of each side of each tap or splice, andAt intervals not exceeding 1.4 m (41/2 ft).Where it is impracticable to provide supports, conductors shall be permitted to be fished through hollow spaces in dry locations, provided each conductor is individually enclosed in flexible nonmetallic tubing that is in continuous lengths between supports, between boxes, or between a support and a box. [394.30(A)](https://2023.antflix.net#394.30(A)) | https://2023.antflix.net#394.30(A) |
Chapter 3 Wiring Methods and Materials | 394.30(B) | Where solid knobs are used, conductors shall be securely tied thereto by tie wires having insulation equivalent to that of the conductor. [394.30(B)](https://2023.antflix.net#394.30(B)) | https://2023.antflix.net#394.30(B) |
Chapter 3 Wiring Methods and Materials | 394.42 | Switches shall comply with 404.4 and 404.10(B). [394.42](https://2023.antflix.net#394.42) | https://2023.antflix.net#394.42 |
Chapter 3 Wiring Methods and Materials | 394.56 | Splices shall be soldered unless approved splicing devices are used. In-line or strain splices shall not be used. [394.56](https://2023.antflix.net#394.56) | https://2023.antflix.net#394.56 |
Chapter 3 Wiring Methods and Materials | 394.104 | Conductors shall be of a type identified in Table 310.4(1). [394.104](https://2023.antflix.net#394.104) | https://2023.antflix.net#394.104 |
Chapter 3 Wiring Methods and Materials | 395.1 | This article covers the use and installation for outdoor overhead conductors over 1000 volts, nominal. [395.1](https://2023.antflix.net#395.1) | https://2023.antflix.net#395.1 |
Chapter 3 Wiring Methods and Materials | 395.10 | Outdoor overhead conductors over 1000 volts, nominal, shall be permitted only for systems rated over 1000 volts, nominal, as follows: Outdoors in free airFor service conductors, feeders, or branch circuitsInformational Note: See IEEE C2, National Electrical Safety Code, and ANSI/IEEE 3001.2, Recommended Practice for Evaluating the Electrical Service Requirements of Industrial and Commercial Power Systems, for additional information on outdoor overhead conductors over 1000 volts. [395.10](https://2023.antflix.net#395.10) | https://2023.antflix.net#395.10 |
Chapter 3 Wiring Methods and Materials | 395.30(A) | Documentation of the engineered design by a licensed professional engineer engaged primarily in the design of such systems for the spacing between conductors shall be available upon request of the authority having jurisdiction and shall include consideration of the following: Applied voltageConductor sizeDistance between support structuresType of structureWind/ice loadingSurge protection [395.30(A)](https://2023.antflix.net#395.30(A)) | https://2023.antflix.net#395.30(A) |
Chapter 3 Wiring Methods and Materials | 395.30(B) | Structures of wood, metal, or concrete, or combinations of those materials, shall be provided for support of overhead conductors over 1000 volts, nominal. Documentation of the engineered design by a licensed professional engineer engaged primarily in the design of such systems and the installation of each support structure shall be available upon request of the authority having jurisdiction and shall include consideration of the following: Soil conditionsFoundations and structure settingsWeight of all supported conductors and equipmentWeather loading and other conditions such as, but not limited to, ice, wind, temperature, and lightningAngle where change of direction occursSpans between adjacent structuresEffect of dead-end structuresStrength of guy wires and guy anchorsStructure size and material(s)Hardware [395.30(B)](https://2023.antflix.net#395.30(B)) | https://2023.antflix.net#395.30(B) |
Chapter 3 Wiring Methods and Materials | 395.30(C) | Insulators used to support conductors shall be rated for all of the following:
Applied phase-to-phase voltage
Mechanical strength required for each individual installation
Impulse withstand BIL in accordance with Table 495.24
Informational Note: See 395.30(A), (B), and (C), which are not all-inclusive lists. [395.30(C)](https://2023.antflix.net#395.30(C)) | https://2023.antflix.net#395.30(C) |
Chapter 3 Wiring Methods and Materials | 396.1 | This article covers the use, installation, and construction specifications for messenger-supported wiring. [396.1](https://2023.antflix.net#396.1) | https://2023.antflix.net#396.1 |
Chapter 3 Wiring Methods and Materials | 396.10(A) | The cable types in Table 396.10(A) shall be permitted to be installed in messenger-supported wiring under the conditions described in the article or section referenced for each.Table 396.10(A) Cable Types Cable Type Section Article Medium-voltage cable 315 Metal-clad cable 330 Mineral-insulated, metal-sheathed cable 332 Multiconductor service-entrance cable 338 Multiconductor underground feeder and branch-circuit cable 340 Other factory-assembled, multiconductor control, signal, or power cables that are identified for the use Power and control tray cable 336 Power-limited tray cable Table 722.135(B), 722.135(C), and 722.179(A)(6) [396.10(A)](https://2023.antflix.net#396.10(A)) | https://2023.antflix.net#396.10(A) |
Chapter 3 Wiring Methods and Materials | 396.10(B) | In industrial establishments only, where conditions of maintenance and supervision ensure that only qualified persons service the installed messenger-supported wiring, the following shall be permitted: Any of the conductor types shown in Table 310.4(1) or Table 310.4(2)MV cableWhere exposed to weather, conductors shall be listed for use in wet locations. Where exposed to direct rays of the sun, conductors or cables shall be sunlight resistant. [396.10(B)](https://2023.antflix.net#396.10(B)) | https://2023.antflix.net#396.10(B) |
Chapter 3 Wiring Methods and Materials | 396.10(C) | Messenger-supported wiring shall be permitted to be used in hazardous (classified) locations where the contained cables and messenger-supported wiring are specifically permitted by other articles in this Code. [396.10(C)](https://2023.antflix.net#396.10(C)) | https://2023.antflix.net#396.10(C) |
Chapter 3 Wiring Methods and Materials | 396.12 | Messenger-supported wiring shall not be used in hoistways or where subject to physical damage. [396.12](https://2023.antflix.net#396.12) | https://2023.antflix.net#396.12 |
Chapter 3 Wiring Methods and Materials | 396.30(A) | The messenger shall be supported at dead ends and at intermediate locations so as to eliminate tension on the conductors. The conductors shall not be permitted to come into contact with the messenger supports or any structural members, walls, or pipes. [396.30(A)](https://2023.antflix.net#396.30(A)) | https://2023.antflix.net#396.30(A) |
Chapter 3 Wiring Methods and Materials | 396.30(B) | Where the messenger is used as a neutral conductor, it shall comply with the requirements of 225.4, 250.184(A), 250.184(B)(7), and 250.187(B). [396.30(B)](https://2023.antflix.net#396.30(B)) | https://2023.antflix.net#396.30(B) |
Chapter 3 Wiring Methods and Materials | 396.30(C) | Where the messenger is used as an equipment grounding conductor, it shall comply with the requirements of 250.32(B), 250.118, 250.184(B)(8), and 250.187(D). [396.30(C)](https://2023.antflix.net#396.30(C)) | https://2023.antflix.net#396.30(C) |
Chapter 3 Wiring Methods and Materials | 396.56 | Conductor splices and taps made and insulated by approved methods shall be permitted in messenger-supported wiring. [396.56](https://2023.antflix.net#396.56) | https://2023.antflix.net#396.56 |
Chapter 3 Wiring Methods and Materials | 396.60 | The messenger shall be grounded as required by 250.80 and 250.86 for enclosure grounding. [396.60](https://2023.antflix.net#396.60) | https://2023.antflix.net#396.60 |
Chapter 3 Wiring Methods and Materials | 398.1 | This article covers the use, installation, and construction specifications of open wiring on insulators. [398.1](https://2023.antflix.net#398.1) | https://2023.antflix.net#398.1 |
Chapter 3 Wiring Methods and Materials | 398.10 | Open wiring on insulators shall be permitted only for industrial or agricultural establishments on systems of 1000 volts, nominal, or less, as follows: Indoors or outdoorsIn wet or dry locationsWhere subject to corrosive vaporsFor services [398.10](https://2023.antflix.net#398.10) | https://2023.antflix.net#398.10 |
Chapter 3 Wiring Methods and Materials | 398.12 | Open wiring on insulators shall not be installed where concealed by the building structure. [398.12](https://2023.antflix.net#398.12) | https://2023.antflix.net#398.12 |
Chapter 3 Wiring Methods and Materials | 398.15(A) | In dry locations, where not exposed to physical damage, conductors shall be permitted to be separately enclosed in flexible nonmetallic tubing. The tubing shall be in continuous lengths not exceeding 4.5 m (15 ft) and secured to the surface by straps at intervals not exceeding 1.4 m (41/2 ft). [398.15(A)](https://2023.antflix.net#398.15(A)) | https://2023.antflix.net#398.15(A) |
Chapter 3 Wiring Methods and Materials | 398.15(B) | Conductors entering or leaving locations subject to dampness, wetness, or corrosive vapors shall have drip loops formed on them and shall then pass upward and inward from the outside of the buildings, or from the damp, wet, or corrosive location, through noncombustible, nonabsorbent insulating tubes. Informational Note: See 230.52 for individual conductors entering buildings or other structures. [398.15(B)](https://2023.antflix.net#398.15(B)) | https://2023.antflix.net#398.15(B) |
Chapter 3 Wiring Methods and Materials | 398.15(C) | Conductors within 2.1 m (7 ft) from the floor shall be considered exposed to physical damage. Where open conductors cross ceiling joists and wall studs and are exposed to physical damage, they shall be protected by one of the following methods: Guard strips shall not be less than 25 mm (1 in.) nominal in thickness and at least as high as the insulating supports, placed on each side of and close to the wiring.A substantial running board at least 13 mm (1/2 in.) thick in back of the conductors with side protections. Running boards shall extend at least 25 mm (1 in.) outside the conductors, but not more than 50 mm (2 in.), and the protecting sides shall be at least 50 mm (2 in.) high and at least 25 mm (1 in.), nominal, in thickness.Boxing made in accordance with 398.15(C)(1) or (C)(2) and furnished with a cover kept at least 25 mm (1 in.) away from the conductors within. Where protecting vertical conductors on side walls, the boxing shall be closed at the top and the holes through which the conductors pass shall be bushed.Rigid metal conduit (RMC), intermediate metal conduit (IMC), rigid polyvinyl chloride conduit (PVC), reinforced thermosetting resin conduit (RTRC), or electrical metallic tubing (EMT). When installed in metal piping, the conductors shall be encased in continuous lengths of approved flexible tubing. [398.15(C)](https://2023.antflix.net#398.15(C)) | https://2023.antflix.net#398.15(C) |
Chapter 3 Wiring Methods and Materials | 398.17 | Open conductors shall be separated from contact with walls, floors, wood cross members, or partitions through which they pass by tubes or bushings of noncombustible, nonabsorbent insulating material. Where the bushing is shorter than the hole, a waterproof sleeve of noninductive material shall be inserted in the hole and an insulating bushing slipped into the sleeve at each end in such a manner as to keep the conductors absolutely out of contact with the sleeve. Each conductor shall be carried through a separate tube or sleeve. Informational Note: See 310.14(A)(3) for temperature limitation of conductors. [398.17](https://2023.antflix.net#398.17) | https://2023.antflix.net#398.17 |
Chapter 3 Wiring Methods and Materials | 398.19 | Open conductors shall be separated at least 50 mm (2 in.) from metal raceways, piping, or other conducting material, and from any exposed lighting, power, or signaling conductor, or shall be separated therefrom by a continuous and firmly fixed nonconductor in addition to the insulation of the conductor. Where any insulating tube is used, it shall be secured at the ends. Where practicable, conductors shall pass over rather than under any piping subject to leakage or accumulations of moisture. [398.19](https://2023.antflix.net#398.19) | https://2023.antflix.net#398.19 |
Chapter 3 Wiring Methods and Materials | 398.23 | Conductors in unfinished attics and roof spaces shall comply with 398.23(A) or (B). [398.23](https://2023.antflix.net#398.23) | https://2023.antflix.net#398.23 |
Chapter 3 Wiring Methods and Materials | 398.23(A) | Conductors shall be installed along the side of or through bored holes in floor joists, studs, or rafters. Where run through bored holes, conductors in the joists and in studs or rafters to a height of not less than 2.1 m (7 ft) above the floor or floor joists shall be protected by substantial running boards extending not less than 25 mm (1 in.) on each side of the conductors. Running boards shall be securely fastened in place. Running boards and guard strips shall not be required for conductors installed along the sides of joists, studs, or rafters. [398.23(A)](https://2023.antflix.net#398.23(A)) | https://2023.antflix.net#398.23(A) |
Chapter 3 Wiring Methods and Materials | 398.23(B) | Conductors shall be installed along the sides of or through bored holes in floor joists, studs, or rafters. Exception: In buildings completed before the wiring is installed, in attic and roof spaces that are not accessible by stairway or permanent ladder and have headroom at all points less than 900 mm (3 ft), the wiring shall be permitted to be installed on the edges of rafters or joists facing the attic or roof space. [398.23(B)](https://2023.antflix.net#398.23(B)) | https://2023.antflix.net#398.23(B) |
Chapter 3 Wiring Methods and Materials | 398.30(A) | Conductors smaller than 8 AWG shall be rigidly supported on noncombustible, nonabsorbent insulating materials and shall not contact any other objects. Supports shall be installed as follows: Within 150 mm (6 in.) from a tap or spliceWithin 300 mm (12 in.) of a dead-end connection to a lampholder or receptacleAt intervals not exceeding 1.4 m (41/2 ft) and at closer intervals sufficient to provide adequate support where likely to be disturbed [398.30(A)](https://2023.antflix.net#398.30(A)) | https://2023.antflix.net#398.30(A) |
Chapter 3 Wiring Methods and Materials | 398.30(B) | Supports for conductors 8 AWG or larger installed across open spaces shall be permitted up to 4.5 m (15 ft) apart if noncombustible, nonabsorbent insulating spacers are used at least every 1.4 m (41/2 ft) to maintain at least 65 mm (21/2 in.) between conductors. Where not likely to be disturbed in buildings of mill construction, 8 AWG and larger conductors shall be permitted to be run across open spaces if supported from each wood cross member on approved insulators maintaining 150 mm (6 in.) between conductors. [398.30(B)](https://2023.antflix.net#398.30(B)) | https://2023.antflix.net#398.30(B) |
Chapter 3 Wiring Methods and Materials | 398.30(C) | In industrial establishments only, where conditions of maintenance and supervision ensure that only qualified persons service the system, conductors of sizes 250 kcmil and larger shall be permitted to be run across open spaces where supported at intervals up to 9.0 m (30 ft) apart. [398.30(C)](https://2023.antflix.net#398.30(C)) | https://2023.antflix.net#398.30(C) |
Chapter 3 Wiring Methods and Materials | 398.30(D) | Where nails are used to mount knobs, they shall not be smaller than tenpenny. Where screws are used to mount knobs, or where nails or screws are used to mount cleats, they shall be of a length sufficient to penetrate the wood to a depth equal to at least one-half the height of the knob and the full thickness of the cleat. Cushion washers shall be used with nails. [398.30(D)](https://2023.antflix.net#398.30(D)) | https://2023.antflix.net#398.30(D) |
Chapter 3 Wiring Methods and Materials | 398.30(E) | Conductors 8 AWG or larger and supported on solid knobs shall be securely tied thereto by tie wires having an insulation equivalent to that of the conductor. [398.30(E)](https://2023.antflix.net#398.30(E)) | https://2023.antflix.net#398.30(E) |
Chapter 3 Wiring Methods and Materials | 398.42 | Surface-type snap switches shall be mounted in accordance with 404.10(A), and boxes shall not be required. Other type switches shall be installed in accordance with 404.4. [398.42](https://2023.antflix.net#398.42) | https://2023.antflix.net#398.42 |
Chapter 3 Wiring Methods and Materials | 398.104 | Conductors shall be of a type identified in Table 310.4(1). [398.104](https://2023.antflix.net#398.104) | https://2023.antflix.net#398.104 |
Chapter 4 Equipment for General Use | 400.1 | This article covers general requirements, applications, and construction specifications for flexible cords and flexible cables. [400.1](https://2023.antflix.net#400.1) | https://2023.antflix.net#400.1 |
Chapter 4 Equipment for General Use | 400.2 | Flexible cords and flexible cables shall comply with this article and with the applicable provisions of other articles of this Code. [400.2](https://2023.antflix.net#400.2) | https://2023.antflix.net#400.2 |
Chapter 4 Equipment for General Use | 400.3 | Flexible cords and flexible cables and their associated fittings shall be suitable for the conditions of use and location. [400.3](https://2023.antflix.net#400.3) | https://2023.antflix.net#400.3 |
Chapter 4 Equipment for General Use | 400.4 | Flexible cords and flexible cables shall conform to the description in Table 400.4. The use of flexible cords and flexible cables other than those in Table 400.4 shall require permission by the authority having jurisdiction.
Table 400.4 Flexible Cords and Flexible Cables
Trade Name
Type Letter
Voltage
AWG or kcmil
Number of Conductors
Insulation
AWG or kcmil
Nominal Insulation Thickness
Braid on Each Conductor
Outer Covering
Use
mm
mils
Lamp cord
C
300600
18—1615—10
2 or more
Thermoset or thermoplastic
18—1615—10
0.761.14
3045
Cotton
None
Pendant or portable
Dry locations
Not hard usage
Elevator cable
E 1,2,3,4
300 or 600
20—2
2 or more
Thermoset
20—1615—1212—108—2
0.510.761.141.52
20304560
Cotton
Three cotton; outer one flame-retardant and moisture-resistant
Elevator lighting and control
Unclassified locations
20—1615—1212—108—2
0.510.761.141.52
20304560
Flexible nylon jacket
Elevator cable
EO 1,2,4
300 or 600
20—2
2 or more
Thermoset
20—1615—1212—108—2
0.510.761.141.52
20304560
Cotton
Three cotton; outer one flame-retardant and moisture-resistant
Elevator lighting and control
Unclassified locations
One cotton and a neoprene jacket
Hazardous (classified) locations
Elevator cable
ETP 2,4
300 or 600
Rayon
Thermoplastic
Hazardous (classified) locations
ETT 2,4
300 or 600
None
One cotton or equivalent and a thermoplastic jacket
Electric vehicle cable
EV 5,6
1000
18—500
2 or more plus equipment grounding conductor(s), plus optional hybrid data, signal communications, and optical fiber cables
Thermoset with optional nylon
18—15
0.76(0.51)
30(20)
Optional
Oil-resistant thermoset
Electric vehicle charging
Wet locations
Extra hard usage
14—10
1.14(0.76)
45(30)
8—2
1.52(1.14)
60(45)
1—4/0
2.03(1.52)
80(60)
250—500
2.41(1.90)
95(75)
EVJ5,6
300
18—12
18—12
0.76(0.51)
30(20)
Hard usage
EVE 5,6
1000
18—500
2 or more plus equipment grounding conductor(s), plus optional hybrid data, signal communications, and optical fiber cables
Thermoplastic elastomer with optional nylon
18—15
0.76(0.51)
30(20)
Oil-resistant thermoplastic elastomer
Extra-hard usage
14—10
1.14(0.76)
45(30)
8—2
1.52(1.14)
60(45)
1—4/0
2.03(1.52)
80(60)
250—500
2.41(1.90)
95(75)
EVJE 5,6
300
18—12
18—12
0.76(0.51)
30(20)
Hard usage
EVT 5,6
1000
18—500
2 or more plus equipment grounding conductor(s), plus optional hybrid data, signal communications, and optical fiber cables
Thermoplastic with optional nylon
18—15
0.76(0.51)
30(20)
Optional
Oil-resistant thermoplastic
Electric vehicle charging
Wet Locations
Extra-hard usage
14—10
1.14(0.76)
45(30)
8—2
1.52(1.14)
60(45)
1—4/0
2.03(1.52)
80(60)
250—500
2.41(1.90)
95(75)
EVJT 5,6
300
18—12
18—12
0.76(0.51)
30(20)
Hard usage
Portable power cable
G
2000
12—500
2—6 plus equipment grounding conductor(s)
Thermoset
12—21—4/0250—500
1.522.032.41
608095
Oil-resistant thermoset
Portable and extra-hard usage
G-GC7
2000
12—500
3—6 plus equipment grounding conductors and 1 ground check conductor
Thermoset
12—21—4/0250—500
1.522.032.41
608095
Oil-resistant thermoset
Heater cord
HPD
300
18—12
2, 3, or 4
Thermoset
18—1615—12
0.380.76
1530
None
Cotton or rayon
Portable heaters
Dry locations
Not hard usage
Parallel heater cord
HPN8
300
18—12
2 or 3
Oil-resistant thermoset
18—16151412
1.141.522.41
456095
None
Oil-resistant thermoset
Portable
Damp locations
Not hard usage
Thermoset jacketed heater cords
HSJ
300
18—12
2, 3, or 4
Thermoset
18—1615—12
0.761.14
3045
None
Cotton and thermoset
Portable or portable heater
Damp locations
Hard usage
HSJW
300
18—12
Thermoset
Cotton and thermoset
Damp locations
HSJO
300
18—12
Oil-resistant thermoset
Cotton and oil-resistant thermoset
Damp and wet locations
HSJOW9
300
18—12
Damp locations
HSJOO
300
18—12
HSJOOW9
300
18—12
Damp and wet locations
Non-integral parallel cords
NISP-1
300
20—18
2 or 3
Thermoset
20—18
0.38
15
None
Thermoset
Pendant or portable
Damp locations
Not hard usage
NISP-2
300
18—16
18—16
0.76
30
NISPE-18
300
20—18
Thermoplastic elastomer
20—18
0.38
15
Thermoplastic elastomer
NISPE-28
300
18—16
18—16
0.76
30
NISPT-18
300
20—18
Thermoplastic
20—18
0.38
15
Thermoplastic
NISPT-28
300
18—16
18—16
0.76
30
Twisted portable cord
PD
300600
18—1614—10
2 or more
Thermoset or thermoplastic
18—1615—10
0.761.14
3045
Cotton
Cotton or rayon
Pendant or portable
Dry locations
Not hard usage
Portable power cable
PPE7
2000
12—500
1—6 plus optional equipment grounding conductor(s)
Thermoplastic elastomer
12—21—4/0250—500
1.522.032.41
608095
Oil-resistant thermoplastic elastomer
Portable, extra-hard usage
Hard service cord
S7
600
18—2
2 or more
Thermoset
18—1514—108—2
0.761.141.52
304560
None
Thermoset
Pendant or portable
Damp locations
Extra-hard usage
Flexible stage and lighting power cable
SC7,10
600
8—250
1 or more
Thermoset
8—21—4/0250
1.522.032.41
608095
Thermoset
Portable, extra-hard usage
SCE7,10
600
Thermoplastic elastomer
Thermoplastic elastomer
SCT7,10
600
Thermoplastic
Thermoplastic
Hard service cord
SE7
600
18—2
2 or more
Thermoplastic elastomer
18—1514—98—2
0.761.141.52
304560
None
Thermoplastic elastomer
Pendant or portable
Damp locations
Extra-hard usage
SEW7,9
600
Damp and wet locations
SEO7
600
Oil-resistant thermoplastic elastomer
Damp locations
SEOW7,9
600
Damp and wet locations
SEOO7
600
Oil-resistant thermoplastic elastomer
Damp locations
SEOOW7,9
600
Damp and wet locations
Junior hard service cord
SJ
300
18—10
2—6
Thermoset
18—1110
0.761.14
3045
None
Thermoset
Pendant or portable
Damp locations
Hard usage
SJE
300
Thermoplastic elastomer
Thermoplastic elastomer
SJEW9
300
Damp and wet locations
SJEO
300
Oil-resistant thermoplastic elastomer
Damp locations
SJEOW9
300
Damp and wet locations
SJEOO
300
Oil-resistant thermoplastic elastomer
Damp locations
SJEOOW9
300
Damp and wet locations
SJO
300
Thermoset
Oil-resistant thermoset
Damp locations
SJOW9
300
18—12 10
0.761.14
3045
Damp and wet locations
SJOO
300
Oil-resistant thermoset
Damp locations
SJOOW9
300
Damp and wet locations
SJT
300
Thermoplastic
Thermoplastic
Damp locations
SJTW9
300
Damp and wet locations
SJTO
300
Oil-resistant thermoplastic
Damp locations
SJTOW9
300
Damp and wet locations
SJTOO
300
Oil-resistant thermoplastic
Damp locations
SJTOOW9
300
Damp and wet locations
Hard service cord
SO7
600
18—2
2 or more
Thermoset
18—15
0.76
30
None
Oil-resistant thermoset
Pendant or portable
Damp locations
Extra-hard usage
SOW7,9
600
Damp and wet locations
SOO7
600
Oil-resistant thermoset
14—98—2
1.141.52
4560
Damp locations
SOOW7,9
600
Damp and wet locations
All thermoset parallel cord
SP-1
300
20—18
2 or 3
Thermoset
20—18
0.76
30
None
None
Pendant or portable
Damp locations
Not hard usage
SP-2
300
18—16
18—16
1.14
45
SP-3
300
18—10
18—1615—141210
1.522.032.412.80
608095110
Refrigerators, room air conditioners, and as permitted in 422.16(B)
All elastomer (thermoplastic) parallel cord
SPE-18
300
20—18
2 or 3
Thermoplastic elastomer
20—18
0.76
30
None
None
Pendant or portable
Damp locations
Not hard usage
SPE-28
300
18—16
18—16
1.14
45
SPE-38
300
18—10
18—1615—141210
1.522.032.412.80
608095110
Refrigerators, room air conditioners, and as permitted in 422.16(B)
All thermoplastic parallel cord
SPT-1
300
20—18
2 or 3
Thermoplastic
20—18
0.76
30
None
None
Pendant or portable
Damp locations
Not hard usage
SPT-1W9
300
2
Damp and wet locations
SPT-2
300
18—16
2 or 3
18—16
1.14
45
Damp locations
SPT-2W9
300
2
Damp and wet locations
SPT-3
300
18—10
2 or 3
18—1615—141210
1.522.032.412.80
608095110
Refrigerators, room air conditioners, and as permitted in 422.16(B)
Damp locations
Not hard usage
Range, dryer cable
SRD
300
10—4
3 or 4
Thermoset
10—4
1.14
45
None
Thermoset
Portable
Damp locations
Ranges, dryers
SRDE
300
10—4
3 or 4
Thermoplastic elastomer
None
Thermoplastic elastomer
SRDT
300
10—4
3 or 4
Thermoplastic
None
Thermoplastic
Hard service cord
ST7
600
18—2
2 or more
Thermoplastic
18—1514—98—2
0.761.141.52
304560
None
Thermoplastic
Pendant or portable
Damp locations
Extra-hard usage
STW7,9
600
Damp and wet locations
STO7
600
Oil-resistant thermoplastic
Damp locations
STOW7,9
600
Damp and wet locations
STOO7
600
Oil-resistant thermoplastic
Damp locations
STOOW7
600
Damp and wet locations
Vacuum cleaner cord
SV
300
18—16
2 or 3
Thermoset
18—16
0.38
15
None
Thermoset
Pendant or portable
Damp locations
Not hard usage
SVE
300
Thermoplastic elastomer
Thermoplastic elastomer
SVEO
300
Oil-resistant thermoplastic elastomer
SVEOO
300
Oil-resistant thermoplastic elastomer
SVO
300
Thermoset
Oil-resistant thermoset
SVOO
300
Oil-resistant thermoset
Oil-resistant thermoset
SVT
300
Thermoplastic
Thermoplastic
SVTO
300
Thermoplastic
Oil-resistant thermoplastic
SVTOO
300
Oil-resistant thermoplastic
Parallel tinsel cord
TPT11
300
27
2
Thermoplastic
27
0.76
30
None
Thermoplastic
Attached to an appliance
Damp locations
Not hard usage
Jacketed tinsel cord
TST11
300
27
2
Thermoplastic
27
0.38
15
None
Thermoplastic
Attached to an appliance
Damp locations
Not hard usage
Portable power cable
W7
2000
12—500501—1000
1—61
Thermoset
12—21—4/0250—500501—1000
1.522.032.412.80
608095110
Oil-resistant thermoset
Portable, extra-hard usage
Notes:
All types listed in Table 400.4 shall have individual conductors twisted together, except for Types HPN, SP-1, SP-2, SP-3, SPE-1, SPE-2, SPE-3, SPT-1, SPT-2, SPT-3, SPT-1W, SPT-2W, TPT, NISP-1, NISP-2, NISPT-1, NISPT-2, NISPE-1, NISPE-2, and three-conductor parallel versions of SRD, SRDE, and SRDT.
The individual conductors of all cords, except those of heat-resistant cords, shall have a thermoset or thermoplastic insulation, except that the equipment grounding conductor, where used, shall be in accordance with 400.23(B).
1Rubber-filled or varnished cambric tapes shall be permitted as a substitute for the inner braids.
2Elevator traveling cables for operating control and signal circuits shall contain nonmetallic fillers as necessary to maintain concentricity. Cables shall have steel supporting members as required for suspension by 620.41. In locations subject to excessive moisture or corrosive vapors or gases, supporting members of other materials shall be permitted. Where steel supporting members are used, they shall run straight through the center of the cable assembly and shall not be cabled with the copper strands of any conductor.
In addition to conductors used for control and signaling circuits, Types E, EO, ETP, and ETT elevator cables shall be permitted to incorporate in the construction one or more of the following: optical fibers; 24 AWG or larger telephone conductor pairs, coaxial cables, or communications cables. The 24 AWG or larger conductor pairs shall be permitted to be covered with suitable shielding for telephone, audio, data transfer, or higher frequency communications circuits; the coaxial cables shall consist of a center conductor, insulation, and a shield for use in video or other radio frequency communications circuits. The optical fiber shall be suitably covered with flame-retardant thermoplastic. The insulation of the conductors shall be rubber or thermoplastic of a thickness not less than specified for the other conductors of the particular type of cable. Metallic shields shall have their own protective covering. Where used, these components shall be permitted to be incorporated in any layer of the cable assembly but shall not run straight through the center.
3Insulations and outer coverings that meet the requirements as flame retardant, limited smoke, and are so listed, shall be permitted to be marked for limited smoke after the Code type designation.
4Elevator cables in sizes 20 AWG through 14 AWG are rated 300 volts, and sizes 10 AWG through 2 AWG are rated 600 volts. 12 AWG is rated 300 volts with a 0.76 mm (30 mil) insulation thickness and 600 volts with a 1.14 mm (45 mil) insulation thickness.
5Conductor size for Types EV, EVJ, EVE, EVJE, EVT, and EVJT cables apply to non—power-limited circuits only. Conductors of power-limited (data, signal, or communications) circuits may extend beyond the stated AWG size range. All conductors shall be insulated for the same cable voltage rating.
6Insulation thickness for Types EV, EVJ, EVEJE, EVT, and EVJT cables of nylon construction is indicated in parentheses.
7Types G, G-GC, S, SC, SCE, SCT, SE, SEO, SEOO, SEW, SEOW, SEOOW, SO, SOO, SOW, SOOW, ST, STO, STOO, STW, STOW, STOOW, PPE, and W shall be permitted for use on theater stages, in garages, and elsewhere where flexible cords are permitted by this Code.
8The third conductor in Type HPN shall be used as an equipment grounding conductor only. The insulation of the equipment grounding conductor for Types SPE-1, SPE-2, SPE-3, SPT-1, SPT-2, SPT-3, NISPT-1, NISPT-2, NISPE-1, and NISPE-2 shall be permitted to be thermoset polymer.
9Cords that comply with the requirements for outdoor cords and are so listed shall be permitted to be designated as weather and water resistant with the suffix "W" after the Code type designation. Cords with the "W" suffix are suitable for use in wet locations and are sunlight resistant.
10The required outer covering on some single-conductor cables may be integral with the insulation.
11Types TPT and TST shall be permitted in lengths not exceeding 2.5 m (8 ft) where attached directly, or by means of a special type of plug, to a portable appliance rated at 50 watts or less and of such nature that extreme flexibility of the cord is essential.
[400.4](https://2023.antflix.net#400.4) | https://2023.antflix.net#400.4 |
Chapter 4 Equipment for General Use | 400.5(A) | Table 400.5(A)(1) provides the ampacities for flexible cords and flexible cables, and Table 400.5(A)(2) provides the ampacities for flexible cords and flexible cables with not more than three current-carrying conductors. These tables shall be used in conjunction with applicable enduse product standards to ensure selection of the proper size and type. Where cords and cables are used in ambient temperatures other than 30°C (86°F), the temperature correction factors from Table 310.15(B)(1)(1) that correspond to the temperature rating of the cord or cable shall be applied to the ampacity in Table 400.5(A)(1) and Table 400.5(A)(2). Cords and cables rated 105°C shall use correction factors in the 90°C column of Table 310.15(B)(1)(1) for temperature correction. Where the number of current-carrying conductors exceeds three, the ampacity of each conductor shall be reduced from the three-conductor rating as shown in Table 400.5(A)(3).
Informational Note: See Informative Annex B, Table B.2 (11), for adjustment factors for more than three current-carrying conductors in a raceway or cable with load diversity.
A neutral conductor that carries only the unbalanced current from other conductors of the same circuit shall not be required to meet the requirements of a current-carrying conductor.
In a 3-wire circuit consisting of two phase conductors and the neutral conductor of a 4-wire, 3-phase, wye-connected system, a common conductor carries approximately the same current as the line-to-neutral currents of the other conductors and shall be considered to be a current-carrying conductor.
On a 4-wire, 3-phase, wye circuit where more than 50 percent of the load consists of nonlinear loads, there are harmonic currents present in the neutral conductor and the neutral conductor shall be considered to be a current-carrying conductor.
An equipment grounding conductor shall not be considered a current-carrying conductor.
Where a single conductor is used for both equipment grounding and to carry unbalanced current from other conductors, as provided for in 250.140 for electric ranges and electric clothes dryers, it shall not be considered as a current-carrying conductor.
Table 400.5(A)(1) Ampacity for Flexible Cords and Flexible Cables [Based on Ambient Temperature of 30°C (86°F). See 400.13 and Table 400.4.]
Copper Conductor Size (AWG)
Thermoplastic Types TPT, TST
Thermoset Types C, E, EO, PD, S, SJ, SJO, SJOW, SJOO, SJOOW, SO, SOW, SOO, SOOW, SP-1, SP-2, SP-3, SRD, SV, SVO, SVOO, NISP-1, NISP-2
Types HPD, HPN, HSJ, HSJO, HSJOW, HSJOO, HSJOOW
Thermoplastic Types ETP, ETT, NISPE-1, NISPE-2, NISPT-1, NISPT-2, SE, SEW, SEO, SEOO, SEOW, SEOOW, SJE, SJEW, SJEO, SJEOO, SJEOW, SJEOOW, SJT, SJTW, SJTO, SJTOW, SJTOO, SJTOOW, SPE-1, SPE-2, SPE-3, SPT-1, SPT-1W, SPT-2, SPT-2W, SPT-3, ST, STW, SRDE, SRDT, STO, STOW, STOO, STOOW, SVE, SVEO, SVEOO, SVT, SVTO, SVTOO
Column A1
Column B2
273
0.5
-
-
-
20
-
54
5
-
18
-
7
10
10
17
-
9
12
13
16
-
10
13
15
15
-
12
16
17
14
-
15
18
20
13
-
17
21
-
12
-
20
25
30
11
-
23
27
-
10
-
25
30
35
9
-
29
34
-
8
-
35
40
-
7
-
40
47
-
6
-
45
55
-
5
-
52
62
-
4
-
60
70
-
3
-
70
82
-
2
-
80
95
-
1The currents under Column A apply to three-conductor cords and other multiconductor cords connected to utilization equipment so that only three conductors are current-carrying.
2The currents under Column B apply to two-conductor cords and other multiconductor cords connected to utilization equipment so that only two conductors are current-carrying.
3Tinsel cord.
4Elevator cables only.
57 amperes for elevator cables only; 2 amperes for other types.
Table 400.5(A)(2) Ampacity of Cable Types SC, SCE, SCT, PPE, G, G-GC, and W [Based on Ambient Temperature of 30°C (86°F). See Table 400.4.]
Copper Conductor Size (AWG or kcmil)
Temperature Rating of Cable
60°C (140°F)
75°C (167°F)
90°C (194°F)
D1
E2
F3
D1
E2
F3
D1
E2
F3
12
-
31
26
-
37
31
-
42
35
10
-
44
37
-
52
43
-
59
49
8
60
55
48
70
65
57
80
74
65
6
80
72
63
95
88
77
105
99
87
4
105
96
84
125
115
101
140
130
114
3
120
113
99
145
135
118
165
152
133
2
140
128
112
170
152
133
190
174
152
1
165
150
131
195
178
156
220
202
177
1/0
195
173
151
230
207
181
260
234
205
2/0
225
199
174
265
238
208
300
271
237
3/0
260
230
201
310
275
241
350
313
274
4/0
300
265
232
360
317
277
405
361
316
250
340
296
259
405
354
310
455
402
352
300
375
330
289
445
395
346
505
449
393
350
420
363
318
505
435
381
570
495
433
400
455
392
343
545
469
410
615
535
468
500
515
448
392
620
537
470
700
613
536
600
575
-
-
690
-
-
780
-
-
700
630
-
-
755
-
-
855
-
-
750
655
-
-
785
-
-
885
-
-
800
680
-
-
815
-
-
920
-
-
900
730
-
-
870
-
-
985
-
-
1000
780
-
-
935
-
-
1055
-
-
1The ampacities under subheading D shall be permitted for single-conductor Types SC, SCE, SCT, PPE, and W cable only where the individual conductors are not installed in raceways and are not in physical contact with each other except in lengths not to exceed 600 mm (24 in.) where passing through the wall of an enclosure.
2The ampacities under subheading E apply to two-conductor cables and other multiconductor cables connected to utilization equipment so that only two conductors are current-carrying.
3The ampacities under subheading F apply to three-conductor cables and other multiconductor cables connected to utilization equipment so that only three conductors are current-carrying.
Table 400.5(A)(3) Adjustment Factors for More Than Three Current-Carrying Conductors in a Flexible Cord or Flexible Cable
Number of Conductors
Percent of Value in Table 400.5(A)(1) and Table 400.5(A)(2)
4—6
80
7—9
70
10—20
50
21—30
45
31—40
40
41 and above
35
[400.5(A)](https://2023.antflix.net#400.5(A)) | https://2023.antflix.net#400.5(A) |
Chapter 4 Equipment for General Use | 400.5(B) | In no case shall conductors be associated together in such a way with respect to the kind of circuit, the wiring method used, or the number of conductors such that the limiting temperature of the conductors is exceeded. [400.5(B)](https://2023.antflix.net#400.5(B)) | https://2023.antflix.net#400.5(B) |
Chapter 4 Equipment for General Use | 400.5(C) | Under engineering supervision, conductor ampacities shall be permitted to be calculated in accordance with 310.14(B). [400.5(C)](https://2023.antflix.net#400.5(C)) | https://2023.antflix.net#400.5(C) |
Chapter 4 Equipment for General Use | 400.6(A) | Flexible cords and flexible cables shall be marked by means of a printed tag attached to the coil reel or carton. The tag shall contain the information required in 310.8(A). Types S, SC, SCE, SCT, SE, SEO, SEOO, SJ, SJE, SJEO, SJEOO, SJO, SJT, SJTO, SJTOO, SO, SOO, ST, STO, STOO, SEW, SEOW, SEOOW, SJEW, SJEOW, SJEOOW, SJOW, SJTW, SJTOW, SJTOOW, SOW, SOOW, STW, STOW, and STOOW flexible cords and G, G-GC, PPE, and W flexible cables shall be durably marked on the surface at intervals not exceeding 610 mm (24 in.) with the type designation, size, and number of conductors. Required markings on tags, cords, and cables shall also include the maximum operating temperature of the flexible cord or flexible cable. [400.6(A)](https://2023.antflix.net#400.6(A)) | https://2023.antflix.net#400.6(A) |
Chapter 4 Equipment for General Use | 400.6(B) | Flexible cords and cable types listed in Table 400.4 shall be permitted to be surface marked to indicate special characteristics of the cable materials. These markings include, but are not limited to, markings for limited smoke, sunlight resistance, and so forth. [400.6(B)](https://2023.antflix.net#400.6(B)) | https://2023.antflix.net#400.6(B) |
Chapter 4 Equipment for General Use | 400.10(A) | Flexible cords and flexible cables shall be used only for the following: Pendants.Wiring of luminaires.Connection of portable luminaires, portable and mobile signs, or appliances.Elevator cables.Wiring of cranes and hoists.Connection of utilization equipment to facilitate frequent interchange.Prevention of the transmission of noise or vibration.Appliances where the fastening means and mechanical connections are specifically designed to permit ready removal for maintenance and repair, and the appliance is intended or identified for flexible cord connection.Connection of moving parts.Where specifically permitted elsewhere in this Code.Between an existing receptacle outlet and an inlet, where the inlet provides power to an additional single receptacle outlet. The wiring interconnecting the inlet to the single receptacle outlet shall be a Chapter 3 wiring method. The inlet, receptacle outlet, and Chapter 3 wiring method, including the flexible cord and fittings, shall be a listed assembly specific for this application. [400.10(A)](https://2023.antflix.net#400.10(A)) | https://2023.antflix.net#400.10(A) |
Chapter 4 Equipment for General Use | 400.10(B) | Where used as permitted in 400.10(A)(3), (A)(6), and (A)(8), each flexible cord shall be equipped with an attachment plug and shall be energized from a receptacle outlet or cord connector body.
Exception: As permitted in 368.56. [400.10(B)](https://2023.antflix.net#400.10(B)) | https://2023.antflix.net#400.10(B) |
Chapter 4 Equipment for General Use | 400.12 | Unless specifically permitted in 400.10, flexible cords, flexible cables, cord sets, and power supply cords shall not be used for the following: As a substitute for the fixed wiring of a structureWhere run through holes in walls, structural ceilings, suspended ceilings, dropped ceilings, or floorsWhere run through doorways, windows, or similar openingsWhere attached to building surfacesException to (4): Flexible cord and flexible cable shall be permitted to be attached to building surfaces in accordance with 368.56(B) and 590.4.Where concealed by walls, floors, or ceilings or located above suspended or dropped ceilingsException to (5): Flexible cords, flexible cables, and power supply cords shall be permitted if contained within an enclosure, for use in other spaces used for environmental air as permitted by 300.22(C)(3).Where installed in raceways, except as otherwise permitted in this CodeWhere subject to physical damageInformational Note: See UL 817, Cord Sets and Power-Supply Cords, and UL 62, Flexible Cords and Cables, for proper application. [400.12](https://2023.antflix.net#400.12) | https://2023.antflix.net#400.12 |
Chapter 4 Equipment for General Use | 400.13 | Flexible cord shall be used only in continuous lengths without splice or tap where initially installed in applications permitted by 400.10(A). The repair of hard-service cord and junior hard-service cord (see Trade Name column in Table 400.4) 14 AWG and larger shall be permitted if conductors are spliced in accordance with 110.14(B) and the completed splice retains the insulation, outer sheath properties, and usage characteristics of the cord being spliced. [400.13](https://2023.antflix.net#400.13) | https://2023.antflix.net#400.13 |
Chapter 4 Equipment for General Use | 400.14 | Flexible cords and flexible cables shall be connected to devices and to fittings so that tension is not transmitted to joints or terminals. Exception: Listed portable single-pole devices that are intended to accommodate such tension at their terminals shall be permitted to be used with single-conductor flexible cable. Informational Note: Some methods of preventing pull on a cord from being transmitted to joints or terminals include knotting the cord, winding with tape, and using support or strain-relief fittings. [400.14](https://2023.antflix.net#400.14) | https://2023.antflix.net#400.14 |
Chapter 4 Equipment for General Use | 400.15 | Flexible cords used in show windows and showcases shall be Types S, SE, SEO, SEOO, SJ, SJE, SJEO, SJEOO, SJO, SJOO, SJT, SJTO, SJTOO, SO, SOO, ST, STO, STOO, SEW, SEOW, SEOOW, SJEW, SJEOW, SJEOOW, SJOW, SJOOW, SJTW, SJTOW, SJTOOW, SOW, SOOW, STW, STOW, or STOOW. Exception No. 1 : For the wiring of chain-supported luminaires. Exception No. 2: As supply cords for portable luminaires and other merchandise being displayed or exhibited. [400.15](https://2023.antflix.net#400.15) | https://2023.antflix.net#400.15 |
Chapter 4 Equipment for General Use | 400.16 | Flexible cords not smaller than 18 AWG, and tinsel cords or cords having equivalent characteristics of smaller size approved for use with specific appliances, shall be considered as protected against overcurrent in accordance with 240.5. [400.16](https://2023.antflix.net#400.16) | https://2023.antflix.net#400.16 |
Chapter 4 Equipment for General Use | 400.17 | Flexible cords and flexible cables shall be protected by bushings or fittings where passing through holes in covers, outlet boxes, or similar enclosures. In industrial establishments where the conditions of maintenance and supervision ensure that only qualified persons service the installation, flexible cords and flexible cables shall be permitted to be installed in aboveground raceways that are no longer than 15 m (50 ft) to protect the flexible cord or flexible cable from physical damage. Where more than three current-carrying conductors are installed within the raceway, the ampacity shall be adjusted in accordance with Table 400.5(A)(3). [400.17](https://2023.antflix.net#400.17) | https://2023.antflix.net#400.17 |
Chapter 4 Equipment for General Use | 400.20 | Flexible cords shall be examined and tested at the factory and labeled before shipment. [400.20](https://2023.antflix.net#400.20) | https://2023.antflix.net#400.20 |
Chapter 4 Equipment for General Use | 400.21(A) | The individual conductors of a flexible cord or flexible cable shall have copper flexible stranding and shall not be smaller than the sizes specified in Table 400.4. [400.21(A)](https://2023.antflix.net#400.21(A)) | https://2023.antflix.net#400.21(A) |
Chapter 4 Equipment for General Use | 400.21(B) | The nominal thickness of insulation for conductors of flexible cords and flexible cables shall not be less than specified in Table 400.4. [400.21(B)](https://2023.antflix.net#400.21(B)) | https://2023.antflix.net#400.21(B) |
Chapter 4 Equipment for General Use | 400.22 | One conductor of flexible cords that is intended to be used as a grounded circuit conductor shall have a continuous marker that readily distinguishes it from the other conductor or conductors. The identification shall consist of one of the methods indicated in 400.22(A) through (F). [400.22](https://2023.antflix.net#400.22) | https://2023.antflix.net#400.22 |
Chapter 4 Equipment for General Use | 400.22(A) | A braid finished to show a white or gray color and the braid on the other conductor or conductors finished to show a readily distinguishable solid color or colors. [400.22(A)](https://2023.antflix.net#400.22(A)) | https://2023.antflix.net#400.22(A) |
Chapter 4 Equipment for General Use | 400.22(B) | A tracer in a braid of any color contrasting with that of the braid and no tracer in the braid of the other conductor or conductors. No tracer shall be used in the braid of any conductor of a flexible cord that contains a conductor having a braid finished to show white or gray. Exception: In the case of Types C and PD and cords having the braids on the individual conductors finished to show white or gray. In such cords, the identifying marker shall be permitted to consist of the solid white or gray finish on one conductor, provided there is a colored tracer in the braid of each other conductor. [400.22(B)](https://2023.antflix.net#400.22(B)) | https://2023.antflix.net#400.22(B) |
Chapter 4 Equipment for General Use | 400.22(C) | A white or gray insulation on one conductor and insulation of a readily distinguishable color or colors on the other conductor or conductors for cords having no braids on the individual conductors. For jacketed cords furnished with appliances, one conductor having its insulation colored light blue, with the other conductors having their insulation of a readily distinguishable color other than white or gray. Exception: Cords that have insulation on the individual conductors integral with the jacket. The insulation shall be permitted to be covered with an outer finish to provide the desired color. [400.22(C)](https://2023.antflix.net#400.22(C)) | https://2023.antflix.net#400.22(C) |
Chapter 4 Equipment for General Use | 400.22(D) | A white or gray separator on one conductor and a separator of a readily distinguishable solid color on the other conductor or conductors of cords having insulation on the individual conductors integral with the jacket. [400.22(D)](https://2023.antflix.net#400.22(D)) | https://2023.antflix.net#400.22(D) |
Chapter 4 Equipment for General Use | 400.22(E) | One conductor having the individual strands tinned and the other conductor or conductors having the individual strands untinned for cords having insulation on the individual conductors integral with the jacket. [400.22(E)](https://2023.antflix.net#400.22(E)) | https://2023.antflix.net#400.22(E) |
Chapter 4 Equipment for General Use | 400.22(F) | One or more ridges, grooves, or white stripes located on the exterior of the cord so as to identify one conductor for cords having insulation on the individual conductors integral with the jacket. [400.22(F)](https://2023.antflix.net#400.22(F)) | https://2023.antflix.net#400.22(F) |
Chapter 4 Equipment for General Use | 400.23 | A conductor intended to be used as an equipment grounding conductor shall have a continuous identifying marker readily distinguishing it from the other conductor or conductors. Conductors having a continuous green color or a continuous green color with one or more yellow stripes shall not be used for other than equipment grounding conductors. Cords or cables consisting of integral insulation and a jacket without a nonintegral equipment grounding conductor shall be permitted to be green. The identifying marker shall consist of one of the methods in 400.23(A) or (B). [400.23](https://2023.antflix.net#400.23) | https://2023.antflix.net#400.23 |
Chapter 4 Equipment for General Use | 400.23(A) | A braid finished to show a continuous green color or a continuous green color with one or more yellow stripes. [400.23(A)](https://2023.antflix.net#400.23(A)) | https://2023.antflix.net#400.23(A) |
Chapter 4 Equipment for General Use | 400.23(B) | For cords having no braids on the individual conductors, an insulation of a continuous green color or a continuous green color with one or more yellow stripes. [400.23(B)](https://2023.antflix.net#400.23(B)) | https://2023.antflix.net#400.23(B) |
Chapter 4 Equipment for General Use | 400.24 | Where a flexible cord is provided with an equipment grounding conductor and equipped with an attachment plug, the attachment plug shall comply with 250.138(A) and (B). [400.24](https://2023.antflix.net#400.24) | https://2023.antflix.net#400.24 |
Chapter 4 Equipment for General Use | 400.30 | Part III applies to single and multiconductor portable cables used to connect mobile equipment and machinery. [400.30](https://2023.antflix.net#400.30) | https://2023.antflix.net#400.30 |
Chapter 4 Equipment for General Use | 400.31(A) | The conductors shall be 12 AWG copper or larger and shall employ flexible stranding. [400.31(A)](https://2023.antflix.net#400.31(A)) | https://2023.antflix.net#400.31(A) |
Chapter 4 Equipment for General Use | 400.31(B) | An equipment grounding conductor(s) shall be provided in cables with three or more conductors. The total area shall not be less than that of the size of the equipment grounding conductor required in 250.122. [400.31(B)](https://2023.antflix.net#400.31(B)) | https://2023.antflix.net#400.31(B) |
Chapter 4 Equipment for General Use | 400.32 | All shields shall be connected to an equipment grounding conductor. [400.32](https://2023.antflix.net#400.32) | https://2023.antflix.net#400.32 |
Chapter 4 Equipment for General Use | 400.33 | Equipment grounding conductors shall be connected in accordance with Parts VI and VII of Article 250. [400.33](https://2023.antflix.net#400.33) | https://2023.antflix.net#400.33 |
Chapter 4 Equipment for General Use | 400.34 | The minimum bending radii for portable cables during installation and handling in service shall be adequate to prevent damage to the cable. [400.34](https://2023.antflix.net#400.34) | https://2023.antflix.net#400.34 |
Chapter 4 Equipment for General Use | 400.35 | Connectors used to connect lengths of cable in a run shall be of a type that locks or latches firmly together. Provisions shall be made to prevent opening or closing these connectors while energized. Suitable means shall be used to eliminate tension at connectors and terminations. [400.35](https://2023.antflix.net#400.35) | https://2023.antflix.net#400.35 |
Chapter 4 Equipment for General Use | 400.36 | Portable cables shall not contain splices unless the splices are of the permanent molded, vulcanized types in accordance with 110.14(B). Terminations on portable cables rated over 600 volts, nominal, shall be accessible only to authorized and qualified personnel. [400.36](https://2023.antflix.net#400.36) | https://2023.antflix.net#400.36 |
Chapter 4 Equipment for General Use | 400.40 | Part IV applies to single and multiconductor portable power feeder cables over 2000 volts nominal used to connect portable equipment and machinery. [400.40](https://2023.antflix.net#400.40) | https://2023.antflix.net#400.40 |
Chapter 4 Equipment for General Use | 400.41 | Portable power feeder cables rated greater than 2000 volts shall comply with 400.14, 400.17, and 400.23 and with the following sections. Informational Note: See ANSI/NEMA WC 58/ ICEA S-75-381, Portable and Power Feeder Cables for Use in Mines and Similar Applications, for information on construction, testing, and marking of portable power feeder cables. [400.41](https://2023.antflix.net#400.41) | https://2023.antflix.net#400.41 |
Chapter 4 Equipment for General Use | 400.42 | Portable power feeder cables over 2000 volts shall be used for the following: Connection of portable equipment and machinery or for wiring of cranes and hoistsTemporary services and installations [400.42](https://2023.antflix.net#400.42) | https://2023.antflix.net#400.42 |
Chapter 4 Equipment for General Use | 400.43 | Portable power feeder cables over 2000 volts shall not be used for the following: As a substitute for the fixed wiring of a structureWhere run through holes in walls, ceilings, or floorsWhere run through doorways, windows, or similar openingsWhere attached to building surfacesWhere concealed by walls, floors, or ceilingsWhere installed in raceways, except as otherwise permitted in this CodeWhere subject to physical damage [400.43](https://2023.antflix.net#400.43) | https://2023.antflix.net#400.43 |
Chapter 4 Equipment for General Use | 400.44(A) | The conductors shall be 6 AWG copper or larger and shall employ flexible stranding. [400.44(A)](https://2023.antflix.net#400.44(A)) | https://2023.antflix.net#400.44(A) |
Chapter 4 Equipment for General Use | 400.44(B) | The nominal thickness of insulation for portable power feeder cables shall not be less than specified in Table 400.44(B)(1) through Table 400.44(B)(4).Table 400.44(B)(1) Thickness of Insulation for Three-Conductor Type G Portable Power Feeder Cables Rated 2000 Volts to 5000 Volts and Equipment Grounding Conductor Size Copper Conductor Size (AWG) or kcmil Nominal Insulation Thickness of Power Conductors Equipment Grounding Conductor mils mm Size AWG 6 110 2.79 10 4—2 110 2.79 8 1 110 2.79 7 1/0 110 2.79 6 2/0 110 2.79 5 3/0 110 2.79 4 4/0 110 2.79 3 Table 400.44(B)(2) Thickness of Insulation for Single Conductor Type SH Portable Power Feeder Cables Rated 2000 Volts to 25,000 Volts for 100 Percent Insulation Level Copper Conductor Size (AWG) or kcmil Nominal Insulation Thickness of Power Conductors mils mm 2001 to 5000 volts 6—4/0 110 2.79 250—500 120 3.05 5001 to 8000 volts 4—500 150 3.81 8001 to 15,000 volts 2—500 210 5.33 15,001 to 25,000 volts 1—500 295 7.49 Table 400.44(B)(3) Thickness of Insulation for Three-Conductor Type SHD and SHD-GC Portable Power Feeder Cables Rated 2000 Volts to 25,000 Volts for 100 Percent Insulation Level and Grounding Conductor Size Copper Conductor Size (AWG) or kcmil Nominal Insulation Thickness of Power Conductors Grounding Conductor mils mm Size AWG 2000 to 5000 volts 6—4/0 110 2.79 8 250—500 120 3.05 8 5001 to 8000 volts 4—500 150 3.81 8 8001 to 15,000 volts 2—4/0 210 5.33 8 15.001 to 25,000 volts 1—4/0 295 7.49 8 Table 400.44(B)(4) Thickness of Insulation for Three-Conductor Type SHD-CGC Portable Power Feeder Cables Rated 2000 Volts to 5000 Volts for 100 Percent Insulation Level and Grounding Conductor Size Copper Conductor Size (AWG) or kcmil Nominal Insulation Thickness of Power Conductors Equipment Grounding Conductor mils mm Size AWG 6 110 2.79 10 4—2 110 2.79 8 1 110 2.79 7 1/0 110 2.79 6 2/0 110 2.79 5 3/0 110 2.79 4 4/0 110 2.79 3 250 120 3.05 2 300—350 120 3.05 1 500 120 3.05 2/0 [400.44(B)](https://2023.antflix.net#400.44(B)) | https://2023.antflix.net#400.44(B) |
Chapter 4 Equipment for General Use | 400.44(C) | An equipment grounding conductor(s) shall be provided in cables with three or more conductors. The total area shall not be less than that of the size of the equipment grounding conductor required in 250.122. [400.44(C)](https://2023.antflix.net#400.44(C)) | https://2023.antflix.net#400.44(C) |
Chapter 4 Equipment for General Use | 400.45 | All shields shall be grounded at least at one end. [400.45](https://2023.antflix.net#400.45) | https://2023.antflix.net#400.45 |
Chapter 4 Equipment for General Use | 400.46 | Equipment grounding conductors shall be connected in accordance with Parts VI and VII of Article 250. [400.46](https://2023.antflix.net#400.46) | https://2023.antflix.net#400.46 |
Chapter 4 Equipment for General Use | 400.47 | The minimum bending radii for portable power feeder cables from 2000 volts to 5000 volts shall not exceed six times the overall cable outer diameter. The minimum bending radii for portable cables from 5001 volts to 25,000 volts shall not exceed eight times the overall cable outer diameter. [400.47](https://2023.antflix.net#400.47) | https://2023.antflix.net#400.47 |
Chapter 4 Equipment for General Use | 400.48 | The use of connectors and couplers to connect lengths of cable together in a run shall not be permitted. [400.48](https://2023.antflix.net#400.48) | https://2023.antflix.net#400.48 |
Chapter 4 Equipment for General Use | 400.49 | Portable power feeder cables shall not contain splices. Connectors, couplers, lugs, elbows, and terminations for portable power feeder cables rated over 2000 volts, nominal, shall be accessible only to authorized and qualified personnel. Suitable means shall be used to eliminate tension at connectors, couplers, lugs, elbows, and terminations. [400.49](https://2023.antflix.net#400.49) | https://2023.antflix.net#400.49 |
Chapter 4 Equipment for General Use | 400.50 | Portable power feeder cables rated greater than 2000 volts shall conform to the description in Table 400.50. Types G, SHD-PCG, and SHD-CGC shall be used only from 2000 volts to 5000 volts. Types SH, SHD, and SHD-GC shall be used from 2000 volts to 25,000 volts. Where a Type designation for portable power feeder cables over 2000 volts conflicts with a designation description in Table 400.4, the description in Table 400.50 shall apply. The use of portable power feeder cables other than those in Table 400.50 shall require permission by the authority having jurisdiction.Table 400.50 Portable Power Feeder Cables
Trade Name
Type Letter
Voltage
AWG or kcmil
Insulation
Outer Covering
Ground Check Conductor
Grounding Conductor
Shielded
Multiconductor Configuration
Portable Power Feeder Cables
G
2001—5000
8—4/0
Thermoset
Heavy duty or extra heavy duty Thermoset
No
Yes
Yes
Two parallel power conductors with a single grounding conductor
SHD-PCG
2001—5000
3—4/0
Thermoset
Heavy duty or extra heavy duty Thermoset
No
Yes
Individually shielded power conductors
Round three power conductors that are separately covered with insulation, a tape, and a metallic shield, grounding conductor, and one or more control conductors under a unit jacket.
SH
2001—25,000
6—500
Thermoset
Heavy duty or extra heavy duty Thermoset
No
No
Yes
N/A
SHD
2001—25,000
6—500
Thermoset
Heavy duty or extra heavy duty Thermoset
No
Yes
Individually shielded power conductors and grounding conductors
Round three power conductors that are separately covered with insulation, a tape, and a shield, and three grounding conductors, one in each interstice.
SHD-GC
2001—25,000
6—500
Thermoset
Heavy duty or extra heavy duty Thermoset
Yes
Yes
Individually shielded power and grounding conductors
Round three power conductors that are separately covered with insulation, a tape, and a shield, and two grounding conductors and one ground-check conductor
SHD-CGC
2001—5000
8—500
Thermoset
Heavy duty or extra heavy duty Thermoset
Yes
Yes
Individually shielded power conductors, grounding conductors, and one ground-check conductor in center
Round three power conductors that are separately covered with insulation, a tape, and metal shield, three grounding conductors, and one center ground-check conductor.
Table 400.51(A)(1) Ampacity for Portable Power Feeder Cables Over 2000 Volts [Based on Ambient Temperature of 30°C (86°F)]
Copper Conductor Size (AWG) or kcmil
Single Conductor*
Three Conductor
Copper Conductor Size (AWG) or kcmil
2001—8000 Volts Shielded
8001—15,000 Volts Shielded
15,001—25,000 Volts Shielded
2001—8000 Volts Shielded
8001—15,000 Volts Shielded
8001—15,000 Volts Shielded
6
123
-
-
102
-
-
6
4
163
-
-
134
-
-
4
3
188
-
-
154
-
-
3
2
214
214
-
175
180
196
2
1
247
247
244
202
205
210
1
1/0
286
285
280
232
236
240
1/0
2/0
329
328
322
267
270
274
2/0
3/0
379
377
371
307
311
315
3/0
4/0
440
437
428
353
357
360
4/0
250
488
484
473
390
395
396
250
300
545
540
528
438
-
-
300
350
604
597
582
478
-
-
350
400
656
649
629
470
-
-
400
450
704
696
676
503
-
-
450
500
757
746
725
536
-
-
500
Note: Ampacities are based on a conductor temperature of 90°C (194°F) and an ambient air temperature of 30°C (86°F).
*Ampacities are based on single isolated cable in air operated with open-circuited shield.
Table 400.51(A)(2) Adjustment Factors for Different Ambient Temperatures
Ambient Temperature, Degrees
Multiplying Correction Factor
°C
°F
10
50
1.26
20
68
1.18
30
86
1.10
40
104
1.00
50
122
0.90
Table 400.51(A)(3) Adjustment Factors for Number of Layers of Cable Wound on a Reel
Number of Layers
Multiplying Correction Factor
1
0.85
2
0.65
3
0.45
4*
0.35
*If more than four layers of cable are wound on the reel, ampacity derating should be calculated using engineering supervision. [400.50](https://2023.antflix.net#400.50) | https://2023.antflix.net#400.50 |
Chapter 4 Equipment for General Use | 400.51(A) | Table 400.51(A)(1) provides the ampacities for single and three-conductor portable power feeder cables rated greater than 2000 volts. Where portable power feeder cables are used in ambient temperatures other than 30°C (86°F), the temperature correction factors from Table 400.51(A)(2) that correspond to the differing ambient temperature shall be applied to the ampacity in Table 400.51(A)(1). Where the cable will not be completely unwound from the cord reel, the ampacity correction factor based on the number of layers remaining wound on a reel shall be applied as shown in Table 400.51(A)(3). [400.51(A)](https://2023.antflix.net#400.51(A)) | https://2023.antflix.net#400.51(A) |
Chapter 4 Equipment for General Use | 400.51(B) | Under engineering supervision, conductor ampacities shall be permitted to be calculated in accordance with 310.14(B). [400.51(B)](https://2023.antflix.net#400.51(B)) | https://2023.antflix.net#400.51(B) |
Chapter 4 Equipment for General Use | 400.52(A) | Portable power feeder cables shall be marked by means of a printed tag attached to the coil reel or carton. The tag shall contain the information required in 310.8(A). Types G, SHD-PCG, SH, SHD, SHD-GC, and SHD-CGC portable power feeder cables shall be durably marked on the surface at intervals not exceeding 610 mm (24 in.) with the following: The maximum rated voltageThe proper type letter or letters for the type of portable power feeder cable as specified elsewhere in this CodeThe manufacturer's name, trademark, or other distinctive marking by which the organization responsible for the product can be readily identifiedThe AWG size or circular mil areaMaximum operating temperature [400.52(A)](https://2023.antflix.net#400.52(A)) | https://2023.antflix.net#400.52(A) |
Chapter 4 Equipment for General Use | 400.52(B) | Portable power feeder cables listed in Table 400.50 shall be permitted to be surface marked to indicate special characteristics of the cable materials. These markings shall be permitted to include, but are not limited to, markings for limited smoke, sunlight resistance, and so forth. [400.52(B)](https://2023.antflix.net#400.52(B)) | https://2023.antflix.net#400.52(B) |
Chapter 4 Equipment for General Use | 402.1 | This article covers general requirements and construction specifications for fixture wires. [402.1](https://2023.antflix.net#402.1) | https://2023.antflix.net#402.1 |
Chapter 4 Equipment for General Use | 402.2 | Fixture wires shall comply with this article and also with the applicable provisions of other articles of this Code. Informational Note: See Part VI of Article 410 for application in luminaires. [402.2](https://2023.antflix.net#402.2) | https://2023.antflix.net#402.2 |
Chapter 4 Equipment for General Use | 402.3 | Fixture wires shall be of a type listed in Table 402.3, and they shall comply with all requirements of that table. The fixture wires listed in Table 402.3 are all suitable for service at 600 volts, nominal, unless otherwise specified. Informational Note: Thermoplastic insulation may stiffen at temperatures lower than -10°C (+14°F). Thermoplastic insulation may also be deformed at normal temperatures where subjected to pressure, such as at points of support.Table 402.3 Fixture Wires
Name
Type Letter
Insulation
AWG
Thickness of Insulation
Outer Covering
Maximum Operating Temperature
Application Provisions
mm
mils
Heat-resistant rubber-covered fixture wire - flexible stranding
FFH-2
Heat-resistant rubber or cross-linked synthetic polymer
18—16
0.76
30
Nonmetallic covering
75°C(167°F)
Fixture wiring
FFHH-2
90°C(194°F)
ECTFE - solid or 7-strand
HF
Ethylene chlorotrifluoroethylene
18—14
0.38
15
None
150°C(302°F)
Fixture wiring
ECTFE - flexible stranding
HFF
Ethylene chlorotrifluoroethylene
18—14
0.38
15
None
150°C(302°F)
Fixture wiring
Tape insulated fixture wire - solid or 7-strand
KF-1
Aromatic polyimide tape
18—10
0.14
5.5
None
200°C(392°F)
Fixture wiring - limited to 300 volts
KF-2
Aromatic polyimide tape
18—10
0.21
8.4
None
200°C(392°F)
Fixture wiring
Tape insulated fixture wire - flexible stranding
KFF-1
Aromatic polyimide tape
18—10
0.14
5.5
None
200°C(392°F)
Fixture wiring - limited to 300 volts
KFF-2
Aromatic polyimide tape
18—10
0.21
8.4
None
200°C(392°F)
Fixture wiring
Perfluoro-alkoxy - solid or 7-strand (nickel or nickel-coated copper)
PAF
Perfluoro-alkoxy
18—14
0.51
20
None
250°C(482°F)
Fixture wiring (nickel or nickel-coated copper)
Perfluoro-alkoxy - flexible stranding
PAFF
Perfluoro-alkoxy
18—14
0.51
20
None
150°C(302°F)
Fixture wiring
Fluorinated ethylene propylene fixture wire - solid or 7-strand
PF
Fluorinated ethylene propylene
18—14
0.51
20
None
200°C(392°F)
Fixture wiring
Fluorinated ethylene propylene fixture wire - flexible stranding
PFF
Fluorinated ethylene propylene
18—14
0.51
20
None
150°C(302°F)
Fixture wiring
Fluorinated ethylene propylene fixture wire - solid or 7-strand
PGF
Fluorinated ethylene propylene
18—14
0.36
14
Glass braid
200°C(392°F)
Fixture wiring
Fluorinated ethylene propylene fixture wire - flexible stranding
PGFF
Fluorinated ethylene propylene
18—14
0.36
14
Glass braid
150°C(302°F)
Fixture wiring
Extruded polytetrafluoroethylene - solid or 7-strand (nickel or nickel-coated copper)
PTF
Extruded polytetrafluoroethylene
18—14
0.51
20
None
250°C(482°F)
Fixture wiring (nickel or nickel-coated copper)
Extruded polytetrafluoroethylene - flexible stranding 26-36 (AWG silver or nickel-coated copper)
PTFF
Extruded polytetrafluoroethylene
18—14
0.51
20
None
150°C(302°F)
Fixture wiring (silver or nickel-coated copper)
Heat-resistant rubber-covered fixture wire - solid or 7-strand
RFH-1
Heat-resistant rubber
18
0.38
15
Nonmetallic covering
75°C(167°F)
Fixture wiring - limited to 300 volts
RFH-2
Heat-resistant rubber Cross-linked synthetic polymer
18—16
0.76
30
None or nonmetallic covering
75°C(167°F)
Fixture wiring
Heat-resistant cross-linked synthetic polymer-insulated fixture wire - solid or 7-strand
RFHH-2*RFHH-3*
Cross-linked synthetic polymer
18—1618—16
0.761.14
3045
None or nonmetallic covering
90°C(194°F)
Fixture wiring
Silicone insulated fixture wire - solid or 7-strand
SF-1
Silicone rubber
18
0.38
15
Nonmetallic covering
200°C(392°F)
Fixture wiring - limited to 300 volts
SF-2
Silicone rubber
18—1210
0.761.14
3045
Nonmetallic covering
200°C(392°F)
Fixture wiring
Silicone insulated fixture wire - flexible stranding
SFF-1
Silicone rubber
18
0.38
15
Nonmetallic covering
150°C(302°F)
Fixture wiring - limited to 300 volts
SFF-2
Silicone rubber
18—1210
0.761.14
3045
Nonmetallic covering
150°C(302°F)
Fixture wiring
Thermoplastic covered fixture wire - solid or 7-strand
TF*
Thermoplastic
18—16
0.76
30
None
60°C(140°F)
Fixture wiring
Thermoplastic covered fixture wire - flexible stranding
TFF*
Thermoplastic
18—16
0.76
30
None
60°C(140°F)
Fixture wiring
Heat-resistant thermoplastic covered fixture wire - solid or 7-strand
TFN*
Thermoplastic
18—16
0.38
15
Nylon-jacketed or equivalent
90°C(194°F)
Fixture wiring
Heat-resistant thermoplastic covered fixture wire - flexible stranded
TFFN*
Thermoplastic
18—16
0.38
15
Nylon-jacketed or equivalent
90°C(194°F)
Fixture wiring
Cross-linked polyolefin insulated fixture wire - solid or 7-strand
XF*
Cross-linked polyolefin
18—1412—10
0.761.14
3045
None
150°C(302°F)
Fixture wiring - limited to 300 volts
Cross-linked polyolefin insulated fixture wire - flexible stranded
XFF*
Cross-linked polyolefin
18—1412—10
0.761.14
3045
None
150°C(302°F)
Fixture wiring - limited to 300 volts
Modified ETFE - solid or 7-strand
ZF
Modified ethylene tetrafluoroethylene
18—14
0.38
15
None
150°C(302°F)
Fixture wiring
Modified ETFE - flexible stranding
ZFF
Modified ethylene tetrafluoroethylene
18—14
0.38
15
None
150°C(302°F)
Fixture wiring
High temp. modified ETFE- solid or 7-strand
ZHF
Modified ethylene tetrafluoroethylene
18—14
0.38
15
None
200°C(392°F)
Fixture wiring
*Insulations and outer coverings that meet the requirements of flame retardant, limited smoke, and are so listed, shall be permitted to be marked for limited smoke after the Code type designation. [402.3](https://2023.antflix.net#402.3) | https://2023.antflix.net#402.3 |
Chapter 4 Equipment for General Use | 402.5 | The ampacity of fixture wire shall be as specified in Table 402.5. No conductor shall be used under such conditions that its operating temperature exceeds the temperature specified in Table 402.3 for the type of insulation involved. Informational Note: See 310.14(A)(3) for temperature limitation of conductors.Table 402.5 Ampacity for Fixture Wires
Size (AWG)
Ampacity
18
6
16
8
14
17
12
23
10
28
[402.5](https://2023.antflix.net#402.5) | https://2023.antflix.net#402.5 |
Chapter 4 Equipment for General Use | 402.6 | Fixture wires shall not be smaller than 18 AWG. [402.6](https://2023.antflix.net#402.6) | https://2023.antflix.net#402.6 |
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