Chapter stringclasses 6 values | Reference stringlengths 1 17 | Body stringlengths 62 23.1k | URL stringlengths 26 42 |
|---|---|---|---|
Chaptewr 5 Special Occupancies | 551.71(B) | A minimum of 70 percent of all recreational vehicle sites with electrical supply shall each be equipped with a 30-ampere, 125-volt weather-resistant receptacle conforming to Figure 551.46(C)(1). This supply shall be permitted to include additional receptacle configurations conforming to 551.81. The remainder of all recreational vehicle sites with electrical supply shall be equipped with one or more of the receptacle configurations conforming to 551.81. [551.71(B)](https://2023.antflix.net#551.71(B)) | https://2023.antflix.net#551.71(B) |
Chaptewr 5 Special Occupancies | 551.71(C) | A minimum of 20 percent of existing and 40 percent of all new recreational vehicle sites with electrical supply, shall each be equipped with a 50-ampere, 125/250-volt weather-resistant receptacle conforming to the configuration as identified in Figure 551.46(C)(1). Every recreational vehicle site equipped with a 50-ampere receptacle shall also be equipped with a 30-ampere, 125-volt receptacle conforming to Figure 551.46(C)(1). These electrical supplies shall be permitted to include additional receptacles that have configurations in accordance with 551.81. The weather-resistant requirement for 50-ampere, 125/250-volt receptacles shall become effective January 1, 2026. Informational Note: The percentage of 50 ampere sites required by 551.71 could be inadequate for seasonal recreational vehicle sites serving a higher percentage of recreational vehicles with 50-ampere electrical systems. In that type of recreational vehicle park, the percentage of 50-ampere sites could approach 100 percent. [551.71(C)](https://2023.antflix.net#551.71(C)) | https://2023.antflix.net#551.71(C) |
Chaptewr 5 Special Occupancies | 551.71(D) | Dedicated tent sites with a 15- or 20-ampere electrical supply shall be permitted to be excluded when determining the percentage of recreational vehicle sites with 30- or 50-ampere receptacles. [551.71(D)](https://2023.antflix.net#551.71(D)) | https://2023.antflix.net#551.71(D) |
Chaptewr 5 Special Occupancies | 551.71(E) | Additional receptacles shall be permitted for the connection of electrical equipment outside the recreational vehicle within the recreational vehicle park. [551.71(E)](https://2023.antflix.net#551.71(E)) | https://2023.antflix.net#551.71(E) |
Chaptewr 5 Special Occupancies | 551.71(F)(1) | Ground-fault circuit-interrupter protection shall be provided as required in 210.8(B). [551.71(F)(1)](https://2023.antflix.net#551.71(F)(1)) | https://2023.antflix.net#551.71(F)(1) |
Chaptewr 5 Special Occupancies | 551.71(F)(2) | Ground-fault circuit-interrupter protection shall only be required for 125-volt, single-phase, 15- and 20-ampere receptacles. Informational Note No. 1: Appliances used within the recreational vehicle can create leakage current levels at the supply receptacle(s) that could exceed the limits of a Class A GFCI device. Informational Note No. 2: The definition of Feeder Assembly clarifies that the power supply cord to a recreational vehicle is considered a feeder. [551.71(F)(2)](https://2023.antflix.net#551.71(F)(2)) | https://2023.antflix.net#551.71(F)(2) |
Chaptewr 5 Special Occupancies | 551.72(A) | Distribution systems shall provide the voltage and have a capacity for the receptacles provided in the recreational vehicle (RV) site supply equipment as calculated according to 551.73 and shall have an ampacity not less than 30 amperes. Systems permitted include single-phase 120 volts, single-phase 120/240 volts, or single-phase 120/208 volts - two ungrounded and one neutral conductor taken from a 208Y/120-volt system. [551.72(A)](https://2023.antflix.net#551.72(A)) | https://2023.antflix.net#551.72(A) |
Chaptewr 5 Special Occupancies | 551.72(B) | Feeders from 208Y/120-volt, 3-phase systems shall be permitted to include two ungrounded conductors and shall include one grounded conductor and one equipment grounding conductor. So far as practicable, the loads shall be equally distributed on the 3-phase system. [551.72(B)](https://2023.antflix.net#551.72(B)) | https://2023.antflix.net#551.72(B) |
Chaptewr 5 Special Occupancies | 551.72(C) | Receptacles rated at 50 amperes shall be supplied from a circuit of the voltage class and rating of the receptacle. Other recreational vehicle sites with 125-volt, 20- and 30-ampere receptacles shall be permitted to be derived from any grounded distribution system that supplies 120-volt, single-phase power. [551.72(C)](https://2023.antflix.net#551.72(C)) | https://2023.antflix.net#551.72(C) |
Chaptewr 5 Special Occupancies | 551.72(D) | Neutral conductors shall be permitted to be reduced in size below the minimum required size of the ungrounded conductors for 240-volt, line-to-line, permanently connected loads only. The neutral conductors shall not be reduced in size below the size of the ungrounded conductors for the site distribution. Informational Note: Due to the long circuit lengths typical in most recreational vehicle parks, feeder conductor sizes found in the ampacity tables of Article 310 could be inadequate to maintain the voltage regulation suggested in 215.2(A), Informational Note No. 2. Total circuit voltage drop is a sum of the voltage drops of each serial circuit segment, where the load for each segment is calculated using the load that segment sees and the demand factors shown in Table 551.73(A). [551.72(D)](https://2023.antflix.net#551.72(D)) | https://2023.antflix.net#551.72(D) |
Chaptewr 5 Special Occupancies | 551.72(E) | The use of listed surge protective devices shall be permitted. Informational Note: Use of multiple autotransformers on the load side of RV pedestals, supplied by a single feeder, can result in increased current on the RV park or campground distribution system. [551.72(E)](https://2023.antflix.net#551.72(E)) | https://2023.antflix.net#551.72(E) |
Chaptewr 5 Special Occupancies | 551.72(F) | Each recreational vehicle shall be powered by only one 30-ampere or one 50-ampere external power supply cord. Informational Note: The requirement in 551.72(F) does not preclude the use of the 15- or 20-ampere receptacle convenience outlet on the recreational vehicle supply equipment. [551.72(F)](https://2023.antflix.net#551.72(F)) | https://2023.antflix.net#551.72(F) |
Chaptewr 5 Special Occupancies | 551.73(A) | Electrical services and feeders shall be calculated on the basis of not less than all of the following: 12,000 volt-amperes per site equipped with 50-ampere, 208Y/120-volt or 120/240-volt supply facilities3600 volt-amperes per site equipped with both 20-ampere and 30-ampere supply facilities2400 volt-amperes per site equipped with only 20-ampere supply facilities600 volt-amperes per site equipped with only 20-ampere supply facilities that are dedicated to tent sitesThe demand factors set forth in Table 551.73(A) shall be the minimum allowable demand factors that shall be permitted in calculating load for service and feeders. Where the electrical supply for a recreational vehicle site has more than one receptacle.Where the electrical supply is in a location that serves two recreational vehicles, the equipment for both sites shall comply with 551.77, and the calculated load shall only be calculated for the two receptacles with the highest rating. [551.73(A)](https://2023.antflix.net#551.73(A)) | https://2023.antflix.net#551.73(A) |
Chaptewr 5 Special Occupancies | 551.73(B) | The demand factor for a given number of sites shall apply to all sites indicated. For example, 20 sites calculated at 45 percent of 3600 volt-amperes results in a permissible demand of 1620 volt-amperes per site or a total of 32,400 volt-amperes for 20 sites. Informational Note: These demand factors may be inadequate in areas of extreme hot or cold temperature with loaded circuits for heating or air conditioning. Loads for other amenities such as, but not limited to, service buildings, recreational buildings, and swimming pools shall be calculated separately and then be added to the value calculated for the recreational vehicle sites where they are all supplied by a common service. Table 551.73(A) Demand Factors for Site Feeders and Service-Entrance Conductors for Park Sites Number of Recreational Vehicle Sites Demand Factor (%) 1 100 2 90 3 80 4 75 5 65 6 60 7—9 55 10—12 50 13—15 48 16—18 47 19—21 45 22—24 43 25—35 42 36 plus 41 [551.73(B)](https://2023.antflix.net#551.73(B)) | https://2023.antflix.net#551.73(B) |
Chaptewr 5 Special Occupancies | 551.74 | Overcurrent protection shall be provided in accordance with Article 240. [551.74](https://2023.antflix.net#551.74) | https://2023.antflix.net#551.74 |
Chaptewr 5 Special Occupancies | 551.76(A) | Recreational vehicle site supply equipment, other than those used as service equipment, shall not be required to have a grounding electrode. An auxiliary grounding electrode(s) in accordance with 250.54 shall be permitted to be installed. [551.76(A)](https://2023.antflix.net#551.76(A)) | https://2023.antflix.net#551.76(A) |
Chaptewr 5 Special Occupancies | 551.76(B) | Exposed non—current-carrying metal parts of fixed equipment, metal boxes, cabinets, and fittings that are not electrically connected to grounded equipment shall be grounded by an equipment grounding conductor run with the circuit conductors from the service equipment or from the transformer of a secondary distribution system. Equipment grounding conductors shall be sized in accordance with 250.122 and shall be permitted to be spliced by listed means. The arrangement of equipment grounding connections shall be such that the disconnection or removal of a receptacle or other device will not interfere with, or interrupt, the grounding continuity. [551.76(B)](https://2023.antflix.net#551.76(B)) | https://2023.antflix.net#551.76(B) |
Chaptewr 5 Special Occupancies | 551.76(C) | Each secondary distribution system shall be grounded at the transformer. [551.76(C)](https://2023.antflix.net#551.76(C)) | https://2023.antflix.net#551.76(C) |
Chaptewr 5 Special Occupancies | 551.76(D) | The grounded conductor shall not be used as an equipment grounding conductor for recreational vehicles or equipment within the recreational vehicle park. [551.76(D)](https://2023.antflix.net#551.76(D)) | https://2023.antflix.net#551.76(D) |
Chaptewr 5 Special Occupancies | 551.76(E) | No connection to a grounding electrode shall be made to the grounded conductor on the load side of the service disconnecting means except as covered in 250.30(A) for separately derived systems, and 250.32(B), Exception No. 1 for separate buildings. [551.76(E)](https://2023.antflix.net#551.76(E)) | https://2023.antflix.net#551.76(E) |
Chaptewr 5 Special Occupancies | 551.77 | Recreational vehicle site supply equipment shall be listed for use as recreational vehicle site supply equipment and shall comply with 551.77(A) through (F). [551.77](https://2023.antflix.net#551.77) | https://2023.antflix.net#551.77 |
Chaptewr 5 Special Occupancies | 551.77(A) | Where provided on back-in sites, the recreational vehicle site electrical supply equipment shall be located on the left (road) side of the parked vehicle, on a line that is 1.5 m to 2.1 m (5 ft to 7 ft) from the left edge (driver's side of the parked RV) of the recreational vehicle stand and shall be located at any point on this line from the rear of the recreational vehicle stand to 4.5 m (15 ft) forward of the rear of the recreational vehicle stand. For pull-through sites, the electrical supply equipment shall be permitted to be located at any point along the line that is 1.5 m to 2.1 m (5 ft to 7 ft) from the left edge (driver's side of the parked RV) from 4.9 m (16 ft) forward of the rear of the recreational vehicle stand to the center point between the two roads that gives access to and egress from the pull-through sites. The left edge (driver's side of the parked RV) of the recreational vehicle stand shall be marked. [551.77(A)](https://2023.antflix.net#551.77(A)) | https://2023.antflix.net#551.77(A) |
Chaptewr 5 Special Occupancies | 551.77(B) | A disconnecting switch or circuit breaker shall be provided in the site supply equipment for disconnecting the power supply to the recreational vehicle. [551.77(B)](https://2023.antflix.net#551.77(B)) | https://2023.antflix.net#551.77(B) |
Chaptewr 5 Special Occupancies | 551.77(C) | All site supply equipment shall be accessible by an unobstructed entrance or passageway not less than 600 mm (2 ft) wide and 2.0 m (6 ft 6 in.) high. [551.77(C)](https://2023.antflix.net#551.77(C)) | https://2023.antflix.net#551.77(C) |
Chaptewr 5 Special Occupancies | 551.77(D) | Site supply equipment shall be located not less than 600 mm (2 ft) above the electrical datum plane for that RV site and no more than 2.0 m (6 ft 6 in.) above the electrical datum plane unless platform provisions are made to reach the circuit protection devices that are no more than 2.0 m (6 ft 6 in.) above that platform. [551.77(D)](https://2023.antflix.net#551.77(D)) | https://2023.antflix.net#551.77(D) |
Chaptewr 5 Special Occupancies | 551.77(E) | Sufficient space shall be provided and maintained about all electrical equipment to permit ready and safe operation, in accordance with 110.26. [551.77(E)](https://2023.antflix.net#551.77(E)) | https://2023.antflix.net#551.77(E) |
Chaptewr 5 Special Occupancies | 551.77(F) | Where the site supply equipment contains a 125/250-volt receptacle, the equipment shall be marked as follows: "Turn disconnecting switch or circuit breaker off before inserting or removing plug. Plug must be fully inserted or removed." The marking shall be located on the equipment adjacent to the receptacle outlet. [551.77(F)](https://2023.antflix.net#551.77(F)) | https://2023.antflix.net#551.77(F) |
Chaptewr 5 Special Occupancies | 551.78(A) | All switches, circuit breakers, receptacles, control equipment, and metering devices located in wet locations shall be weatherproof. [551.78(A)](https://2023.antflix.net#551.78(A)) | https://2023.antflix.net#551.78(A) |
Chaptewr 5 Special Occupancies | 551.78(B) | If secondary meters are installed, meter sockets without meters installed shall be blanked off with an approved blanking plate. [551.78(B)](https://2023.antflix.net#551.78(B)) | https://2023.antflix.net#551.78(B) |
Chaptewr 5 Special Occupancies | 551.79 | Open conductors of not over 1000 volts, nominal, shall have a vertical clearance of not less than 5.5 m (18 ft) and a horizontal clearance of not less than 900 mm (3 ft) in all areas subject to recreational vehicle movement. In all other areas, clearances shall conform to 235.360 and 235.361. Informational Note: See 235.360 and 235.361, for clearances of conductors over 600 volts, nominal. [551.79](https://2023.antflix.net#551.79) | https://2023.antflix.net#551.79 |
Chaptewr 5 Special Occupancies | 551.80(A) | All direct-burial conductors, including the equipment grounding conductor if of aluminum, shall be insulated and identified for the use. All conductors shall be continuous from equipment to equipment. All splices and taps shall be made in approved junction boxes or by use of listed material. [551.80(A)](https://2023.antflix.net#551.80(A)) | https://2023.antflix.net#551.80(A) |
Chaptewr 5 Special Occupancies | 551.80(B) | Direct-buried conductors and cables entering or leaving a trench shall be protected by rigid metal conduit, intermediate metal conduit, electrical metallic tubing with supplementary corrosion protection, rigid polyvinyl chloride conduit (PVC), nonmetallic underground conduit with conductors (NUCC), high density polyethylene conduit (HDPE), reinforced thermosetting resin conduit (RTRC), liquidtight flexible nonmetallic conduit, liquidtight flexible metal conduit, or other approved raceways or enclosures. Where subject to physical damage, the conductors or cables shall be protected by rigid metal conduit, intermediate metal conduit, Schedule 80 PVC conduit, or RTRC listed for exposure to physical damage. All such protection shall extend at least 450 mm (18 in.) into the trench from finished grade. Informational Note: See 300.5 and Article 340 for conductors or Type UF cable used underground or in direct burial in earth. [551.80(B)](https://2023.antflix.net#551.80(B)) | https://2023.antflix.net#551.80(B) |
Chaptewr 5 Special Occupancies | 551.81 | A receptacle to supply electric power to a recreational vehicle shall be one of the configurations shown in Figure 551.46(C)(1) in the following ratings: 50-ampere - 125/250-volt, 50-ampere, 3-pole, 4-wire grounding type for 120/240-volt systems30-ampere - 125-volt, 30-ampere, 2-pole, 3-wire grounding type for 120-volt systems20-ampere - 125-volt, 20-ampere, 2-pole, 3-wire grounding type for 120-volt systemsInformational Note: See ANSI/NEMA WD 6-2016, Wiring Devices - Dimensional Specifications, Figures 14-50, TT, and 5-20, for complete details of these configurations. [551.81](https://2023.antflix.net#551.81) | https://2023.antflix.net#551.81 |
Chaptewr 5 Special Occupancies | 552.1 | The provisions of this article cover the electrical conductors and equipment installed within or on park trailers not covered fully under Articles 550 and 551. [552.1](https://2023.antflix.net#552.1) | https://2023.antflix.net#552.1 |
Chaptewr 5 Special Occupancies | 552.4 | A park trailer is intended for seasonal use. It is not intended as a permanent dwelling unit or for commercial uses such as banks, clinics, offices, or similar. Units designed for such purposes are classified as relocatable structures and are covered in Part II of Article 545. [552.4](https://2023.antflix.net#552.4) | https://2023.antflix.net#552.4 |
Chaptewr 5 Special Occupancies | 552.5 | Labels required by Article 552 shall be made of etched, metal-stamped, or embossed brass or stainless steel; plastic laminates not less than 0.13 mm (0.005 in.) thick; or anodized or alclad aluminum not less than 0.5 mm (0.020 in.) thick or the equivalent. Informational Note: See ANSI Z535.4-2011, Product Safety Signs and Labels, for guidance on other label criteria used in the park trailer industry. [552.5](https://2023.antflix.net#552.5) | https://2023.antflix.net#552.5 |
Chaptewr 5 Special Occupancies | 552.10(A) | Low-voltage circuits furnished and installed by the park trailer manufacturer, other than those related to braking, shall be subject to this Code. Circuits supplying lights subject to federal or state regulations shall comply with applicable government regulations and this Code. [552.10(A)](https://2023.antflix.net#552.10(A)) | https://2023.antflix.net#552.10(A) |
Chaptewr 5 Special Occupancies | 552.10(B)(1) | Copper conductors shall be used for low-voltage circuits. Exception: A metal chassis or frame shall be permitted as the return path to the source of supply. [552.10(B)(1)](https://2023.antflix.net#552.10(B)(1)) | https://2023.antflix.net#552.10(B)(1) |
Chaptewr 5 Special Occupancies | 552.10(B)(2) | Conductors shall conform to the requirements for Type GXL, HOT, SGT, SGR, or Type SXL or shall have insulation in accordance with Table 310.4(1) or the equivalent. Conductor sizes 6 AWG through 18 AWG or SAE shall be listed. Single-wire, low-voltage conductors shall be of the stranded ty pe. Informational Note: See SAE J1128-2015, Low Voltage Primary Cable, for Types GXL, HOT, and SXL, and SAE J1127-2015, Low Voltage Battery Cable, for Types SGT and SGR. [552.10(B)(2)](https://2023.antflix.net#552.10(B)(2)) | https://2023.antflix.net#552.10(B)(2) |
Chaptewr 5 Special Occupancies | 552.10(B)(3) | All insulated low-voltage conductors shall be surface marked at intervals not greater than 1.2 m (4 ft) as follows: Listed conductors shall be marked as required by the listing agency.SAE conductors shall be marked with the name or logo of the manufacturer, specification designation, and wire gauge.Other conductors shall be marked with the name or logo of the manufacturer, temperature rating, wire gauge, conductor material, and insulation thickness. [552.10(B)(3)](https://2023.antflix.net#552.10(B)(3)) | https://2023.antflix.net#552.10(B)(3) |
Chaptewr 5 Special Occupancies | 552.10(C)(1) | Conductors shall be protected against physical damage and shall be secured. Where insulated conductors are clamped to the structure, the conductor insulation shall be supplemented by an additional wrap or layer of equivalent material, except that jacketed cables shall not be required to be so protected. Wiring shall be routed away from sharp edges, moving parts, or heat sources. [552.10(C)(1)](https://2023.antflix.net#552.10(C)(1)) | https://2023.antflix.net#552.10(C)(1) |
Chaptewr 5 Special Occupancies | 552.10(C)(2) | Conductors shall be spliced or joined with splicing devices that provide a secure connection or by brazing, welding, or soldering with a fusible metal or alloy. Soldered splices shall first be spliced or joined to be mechanically and electrically secure without solder, and then soldered. All splices, joints, and free ends of conductors shall be covered with an insulation equivalent to that on the conductors. [552.10(C)(2)](https://2023.antflix.net#552.10(C)(2)) | https://2023.antflix.net#552.10(C)(2) |
Chaptewr 5 Special Occupancies | 552.10(C)(3) | Battery and other low-voltage circuits shall be physically separated by at least a 13-mm (1/2-in.) gap or other approved means from circuits of a different power source. Acceptable methods shall be by clamping, routing, or equivalent means that ensure permanent total separation. Where circuits of different power sources cross, the external jacket of the nonmetallic-sheathed cables shall be deemed adequate separation. [552.10(C)(3)](https://2023.antflix.net#552.10(C)(3)) | https://2023.antflix.net#552.10(C)(3) |
Chaptewr 5 Special Occupancies | 552.10(C)(4) | Ground connections to the chassis or frame shall be made in an accessible location and shall be mechanically secure. Ground connections shall be by means of copper conductors and copper or copper-alloy terminals of the solderless type identified for the size of wire used. The surface on which ground terminals make contact shall be cleaned and be free from oxide or paint or shall be electrically connected through the use of a cadmium, tin, or zinc-plated internal/external-toothed lockwasher or locking terminals. Ground terminal attaching screws, rivets or bolts, nuts, and lockwashers shall be cadmium, tin, or zinc-plated except rivets shall be permitted to be unanodized aluminum where attaching to aluminum structures. The chassis-grounding terminal of the battery shall be connected to the unit chassis with a minimum 8 AWG copper conductor. In the event the unbonded lead from the battery exceeds 8 AWG, the bonding conductor size shall be not less than that of the unbonded lead. [552.10(C)(4)](https://2023.antflix.net#552.10(C)(4)) | https://2023.antflix.net#552.10(C)(4) |
Chaptewr 5 Special Occupancies | 552.10(D) | Storage batteries subject to this Code shall be securely attached to the unit and installed in an area vaportight to the interior and ventilated directly to the exterior of the unit. Where batteries are installed in a compartment, the compartment shall be ventilated with openings having a minimum area of 1100 mm2 (1.7 in.2) at both the top and at the bottom. Where compartment doors are equipped for ventilation, the openings shall be within 50 mm (2 in.) of the top and bottom. Batteries shall not be installed in a compartment containing spark- or flame-producing equipment. [552.10(D)](https://2023.antflix.net#552.10(D)) | https://2023.antflix.net#552.10(D) |
Chaptewr 5 Special Occupancies | 552.10(E)(1) | Low-voltage circuit wiring shall be protected by overcurrent protective devices rated not in excess of the ampacity of copper conductors, in accordance with Table 552.10(E)(1). [552.10(E)(1)](https://2023.antflix.net#552.10(E)(1)) | https://2023.antflix.net#552.10(E)(1) |
Chaptewr 5 Special Occupancies | 552.10(E)(2) | Circuit breakers or fuses shall be of an approved type, including automotive types. Fuseholders shall be clearly-marked with maximum fuse size and shall be protected against shorting and physical damage by a cover or equivalent means. Informational Note: See ANSI/SAE J554-1987, Standard for Electric Fuses (Cartridge Type); SAE J1284-1988, Standard for Blade Type Electric Fuses; and UL 275-2005, Standard for Automotive Glass Tube Fuses, for further information. [552.10(E)(2)](https://2023.antflix.net#552.10(E)(2)) | https://2023.antflix.net#552.10(E)(2) |
Chaptewr 5 Special Occupancies | 552.10(E)(3) | Appliances such as pumps, compressors, heater blowers, and similar motor-driven appliances shall be installed in accordance with the manufacturer's instructions. Motors that are controlled by automatic switching or by latching-type manual switches shall be protected in accordance with 430.32(B). [552.10(E)(3)](https://2023.antflix.net#552.10(E)(3)) | https://2023.antflix.net#552.10(E)(3) |
Chaptewr 5 Special Occupancies | 552.10(E)(4) | The overcurrent protective device shall be installed in an accessible location on the unit within 450 mm (18 in.) of the point where the power supply connects to the unit circuits. If located outside the park trailer, the device shall be protected against weather and physical damage. Exception: External low-voltage supply shall be permitted to have the overcurrent protective device within 450 mm (18 in.) after entering the unit or after leaving a metal raceway. [552.10(E)(4)](https://2023.antflix.net#552.10(E)(4)) | https://2023.antflix.net#552.10(E)(4) |
Chaptewr 5 Special Occupancies | 552.10(F) | Switches shall have a dc rating not less than the connected load. [552.10(F)](https://2023.antflix.net#552.10(F)) | https://2023.antflix.net#552.10(F) |
Chaptewr 5 Special Occupancies | 552.10(G) | All low-voltage interior luminaires rated more than 4 watts, employing lamps rated more than 1.2 watts, shall be listed. Table 552.10(E)(1) Low-Voltage Overcurrent Protection Wire Size (AWG) Ampacity Wire Type 18 6 Stranded only 16 8 Stranded only 14 15 Stranded or solid 12 20 Stranded or solid 10 30 Stranded or solid [552.10(G)](https://2023.antflix.net#552.10(G)) | https://2023.antflix.net#552.10(G) |
Chaptewr 5 Special Occupancies | 552.20(A) | Unit wiring suitable for connection to a battery or other low-voltage supply source shall be permitted to be connected to a 120-volt source, provided that the entire wiring system and equipment are rated and installed in full conformity with Parts I, III, IV, and V requirements of this article covering 120-volt electrical systems. Circuits fed from ac transformers shall not supply dc appliances. [552.20(A)](https://2023.antflix.net#552.20(A)) | https://2023.antflix.net#552.20(A) |
Chaptewr 5 Special Occupancies | 552.20(B) | The 120-volt ac side of the voltage converter shall be wired in full conformity with the requirements of Parts I and IV of this article for 120-volt electrical systems. Exception: Converters supplied as an integral part of a listed appliance shall not be subject to 552.20(B). All converters and transformers shall be listed for use in recreation units and designed or equipped to provide overtemperature protection. To determine the converter rating, the following percentages shall be applied to the total connected load, including average battery-charging rate, of all 12-volt equipment: The first 20 amperes of load at 100 percent plus The second 20 amperes of load at 50 percent plus All load above 40 amperes at 25 percent Exception: A low-voltage appliance that is controlled by a momentary switch (normally open) that has no means for holding in the closed position shall not be considered as a connected load when determining the required converter rating. Momentarily energized appliances shall be limited to those used to prepare the unit for occupancy or travel. [552.20(B)](https://2023.antflix.net#552.20(B)) | https://2023.antflix.net#552.20(B) |
Chaptewr 5 Special Occupancies | 552.20(C) | The non—current-carrying metal enclosure of the voltage converter shall be connected to the frame of the unit with an 8 AWG copper conductor minimum. The equipment grounding conductor for the battery and the metal enclosure shall be permitted to be the same conductor. [552.20(C)](https://2023.antflix.net#552.20(C)) | https://2023.antflix.net#552.20(C) |
Chaptewr 5 Special Occupancies | 552.20(D) | Fixtures, including luminaires, or appliances having both 120-volt and low-voltage connections shall be listed for dual voltage. [552.20(D)](https://2023.antflix.net#552.20(D)) | https://2023.antflix.net#552.20(D) |
Chaptewr 5 Special Occupancies | 552.20(E) | Autotransformers shall not be used. [552.20(E)](https://2023.antflix.net#552.20(E)) | https://2023.antflix.net#552.20(E) |
Chaptewr 5 Special Occupancies | 552.20(F) | Where a park trailer is equipped with a 120-volt or 120/240-volt ac system, a low-voltage system, or both, receptacles and plug caps of the low-voltage system shall differ in configuration from those of the 120-volt or 120/240-volt system. Where a unit equipped with a battery or dc system has an external connection for low-voltage power, the connector shall have a configuration that will not accept 120-volt power. [552.20(F)](https://2023.antflix.net#552.20(F)) | https://2023.antflix.net#552.20(F) |
Chaptewr 5 Special Occupancies | 552.40(A) | The electrical equipment and material of park trailers indicated for connection to a wiring system rated 120 volts, nominal, 2-wire with an equipment grounding conductor, or a wiring system rated 120/240 volts, nominal, 3-wire with an equipment grounding conductor, shall be listed and installed in accordance with Parts I, III, IV, and V of this article. [552.40(A)](https://2023.antflix.net#552.40(A)) | https://2023.antflix.net#552.40(A) |
Chaptewr 5 Special Occupancies | 552.40(B) | Electrical materials, devices, appliances, fittings, and other equipment installed, intended for use in, or attached to the park trailer shall be listed. All products shall be used only in the manner in which they have been tested and found suitable for the intended use. [552.40(B)](https://2023.antflix.net#552.40(B)) | https://2023.antflix.net#552.40(B) |
Chaptewr 5 Special Occupancies | 552.41(A) | Receptacle outlets shall be installed at wall spaces 600 mm (2 ft) wide or more so that no point along the floor line is more than 1.8 m (6 ft), measured horizontally, from an outlet in that space. Exception No. 1: Bath and hallway areas shall not be required to comply with 552.41(A). Exception No. 2: Wall spaces occupied by kitchen cabinets, wardrobe cabinets, built-in furniture; behind doors that could open fully against a wall surface; or similar facilities. [552.41(A)](https://2023.antflix.net#552.41(A)) | https://2023.antflix.net#552.41(A) |
Chaptewr 5 Special Occupancies | 552.41(B) | Receptacle outlets shall be installed as follows: Adjacent to countertops in the kitchen [at least one on each side of the sink if countertops are on each side and are 300 mm (12 in.) or over in width and depth]Adjacent to the refrigerator and gas range space, except where a gas-fired refrigerator or cooking appliance, requiring no external electrical connection, is factory-installedAdjacent to countertop spaces of 300 mm (12 in.) or more in width and depth that cannot be reached from a receptacle required in 552.41(B)(1) by a cord of 1.8 m (6 ft) without crossing a traffic area, cooking appliance, or sink [552.41(B)](https://2023.antflix.net#552.41(B)) | https://2023.antflix.net#552.41(B) |
Chaptewr 5 Special Occupancies | 552.41(C) | Each 125-volt, single-phase, 15- or 20-ampere receptacle shall have ground-fault circuit-interrupter protection for personnel in the following locations: Where the receptacles are installed to serve kitchen countertop surfacesWithin 1.8 m (6 ft) of any lavatory or sinkException: Receptacles installed for appliances in dedicated spaces, such as for dishwashers, disposals, refrigerators, freezers, and laundry equipment.In the area occupied by a toilet, shower, tub, or any combination thereofOn the exterior of the unitException: Receptacles that are located inside of an access panel that is installed on the exterior of the unit to supply power for an installed appliance shall not be required to have ground-fault circuit-interrupter protection.The receptacle outlet shall be permitted in a listed luminaire. A receptacle outlet shall not be installed in a tub or combination tub-shower compartment. [552.41(C)](https://2023.antflix.net#552.41(C)) | https://2023.antflix.net#552.41(C) |
Chaptewr 5 Special Occupancies | 552.41(D) | Where a pipe heating cable outlet is installed, the outlet shall be as follows: Located within 600 mm (2 ft) of the cold water inletConnected to an interior branch circuit, other than a small-appliance branch circuitOn a circuit where all of the outlets are on the load side of the ground-fault circuit-interrupter protection for personnelMounted on the underside of the park trailer and shall not be considered to be the outdoor receptacle outlet required in 552.41 (E) [552.41(D)](https://2023.antflix.net#552.41(D)) | https://2023.antflix.net#552.41(D) |
Chaptewr 5 Special Occupancies | 552.41(E) | At least one receptacle outlet shall be installed outdoors. A receptacle outlet located in a compartment accessible from the outside of the park trailer shall be considered an outdoor receptacle. Outdoor receptacle outlets shall be protected as required in 552.41 (C)(4). [552.41(E)](https://2023.antflix.net#552.41(E)) | https://2023.antflix.net#552.41(E) |
Chaptewr 5 Special Occupancies | 552.41(F)(1) | Receptacle outlets shall not be installed in or within reach [750 mm (30 in.)] of a shower or bathtub space. [552.41(F)(1)](https://2023.antflix.net#552.41(F)(1)) | https://2023.antflix.net#552.41(F)(1) |
Chaptewr 5 Special Occupancies | 552.41(F)(2) | A receptacle shall not be installed in a face-up position in any countertop or other similar horizontal surface. [552.41(F)(2)](https://2023.antflix.net#552.41(F)(2)) | https://2023.antflix.net#552.41(F)(2) |
Chaptewr 5 Special Occupancies | 552.42(A) | The branch-circuit overcurrent devices shall be rated as follows: Not more than the circuit conductorsNot more than 150 percent of the rating of a single appliance rated 13.3 amperes or more and supplied by an individual branch circuitNot more than the overcurrent protection size marked on an air conditioner or other motor-operated appliances. [552.42(A)](https://2023.antflix.net#552.42(A)) | https://2023.antflix.net#552.42(A) |
Chaptewr 5 Special Occupancies | 552.42(B) | A 20-ampere fuse or circuit breaker shall be permitted for protection for fixtures, including luminaires, leads, cords, or small appliances, and 14 AWG tap conductors, not over 1.8 m (6 ft) long for recessed luminaires. [552.42(B)](https://2023.antflix.net#552.42(B)) | https://2023.antflix.net#552.42(B) |
Chaptewr 5 Special Occupancies | 552.42(C) | If more than one receptacle or load is on a branch circuit, 15-ampere receptacles shall be permitted to be protected by a 20-ampere fuse or circuit breaker. [552.42(C)](https://2023.antflix.net#552.42(C)) | https://2023.antflix.net#552.42(C) |
Chaptewr 5 Special Occupancies | 552.43(A) | The power supply to the park trailer shall be a feeder assembly consisting of not more than one listed 30-ampere or 50-ampere park trailer power-supply cord, with an integrally molded or securely attached cap, or a permanently installed feeder. [552.43(A)](https://2023.antflix.net#552.43(A)) | https://2023.antflix.net#552.43(A) |
Chaptewr 5 Special Occupancies | 552.43(B) | If the park trailer has a power-supply cord, it shall be permanently attached to the panelboard, or to a junction box permanently connected to the panelboard, with the free end terminating in a molded-on attachment plug cap. Cords with adapters and pigtail ends, extension cords, and similar items shall not be attached to, or shipped with, a park trailer. A suitable clamp or the equivalent shall be provided at the panelboard knockout to afford strain relief for the cord to prevent strain from being transmitted to the terminals when the power-supply cord is handled in its intended manner. The cord shall be a listed type with 3-wire, 120-volt or 4-wire, 120/240-volt conductors, one of which shall be identified by a continuous green color or a continuous green color with one or more yellow stripes for use as the equipment grounding conductor. [552.43(B)](https://2023.antflix.net#552.43(B)) | https://2023.antflix.net#552.43(B) |
Chaptewr 5 Special Occupancies | 552.43(C) | Where the calculated load exceeds 50 amperes or where a permanent feeder is used, the supply shall be by means of one of the following: One mast weatherhead installation, installed in accordance with Article 230, containing four continuous, insulated, color-coded feeder conductors, one of which shall be an equipment grounding conductorA rigid metal conduit, intermediate metal conduit, rigid polyvinyl chloride conduit, or other raceways identified for the location from the disconnecting means in the park trailer to the underside of the park trailer [552.43(C)](https://2023.antflix.net#552.43(C)) | https://2023.antflix.net#552.43(C) |
Chaptewr 5 Special Occupancies | 552.44(A) | Each feeder assembly shall be factory supplied or factory installed and connected directly to the terminals of the panelboard or conductors within a junction box and provided with means to prevent strain from being transmitted to the terminals. The ampacity of the conductors between each junction box and the terminals of each panelboard shall be at least equal to the ampacity of the feeder cord. The supply end of the assembly shall be equipped with an attachment plug of the type described in 552.44(C). Where the cord passes through the walls or floors, it shall be protected by means of conduit and bushings or equivalent. The cord assembly shall have permanent provisions for protection against corrosion and mechanical damage while the unit is in transit. [552.44(A)](https://2023.antflix.net#552.44(A)) | https://2023.antflix.net#552.44(A) |
Chaptewr 5 Special Occupancies | 552.44(B) | The cord-exposed usable length shall be measured from the point of entrance to the park trailer or the face of the flanged surface inlet (motor-base attachment plug) to the face of the attachment plug at the supply end. The cord-exposed usable length, measured to the point of entry on the unit exterior, shall be a minimum of 7.0 m (23 ft) where the point of entrance is at the side of the unit, or shall be a minimum 8.5 m (28 ft) where the point of entrance is at the rear of the unit. The maximum length shall not exceed 11 m (361/2 ft). Where the cord entrance into the unit is more than 900 mm (3 ft) above the ground, the minimum cord lengths above shall be increased by the vertical distance of the cord entrance heights above 900 mm (3 ft). [552.44(B)](https://2023.antflix.net#552.44(B)) | https://2023.antflix.net#552.44(B) |
Chaptewr 5 Special Occupancies | 552.44(C)(1) | Park trailers wired in accordance with 552.46(A) shall have an attachment plug that shall be 2-pole, 3-wire grounding type, rated 30 amperes, 125 volts, conforming to the configuration shown in Figure 552.44(C)(1) intended for use with units rated at 30 amperes, 125 volts. Informational Note: See ANSI/NEMA WD 6-2016, Wiring Devices - Dimensional Specifications, Figure TT, for complete details of this configuration. [552.44(C)(1)](https://2023.antflix.net#552.44(C)(1)) | https://2023.antflix.net#552.44(C)(1) |
Chaptewr 5 Special Occupancies | 552.44(C)(2) | Park trailers having a feeder assembly rated 50 amperes as permitted by 552.43(B) shall have a 3-pole, 4-wire grounding-type attachment plug rated 50 amperes, 125/250 volts, conforming to the configuration shown in Figure 552.44(C)(1). Informational Note: See ANSI/NEMA WD 6-2016, Wiring Devices - Dimensional Specifications, Figure 14-50, for complete details of this configuration. [552.44(C)(2)](https://2023.antflix.net#552.44(C)(2)) | https://2023.antflix.net#552.44(C)(2) |
Chaptewr 5 Special Occupancies | 552.44(D) | Each park trailer shall have a safety label with the signal word WARNING in minimum 6 mm (1/4 in.) high letters and body text in minimum 3 mm (1/8 in.) high letters on a contrasting background. The safety label shall be affixed to the exterior skin, at or near the point of entrance of the feeder assembly and shall read, as appropriate: WARNING:THIS CONNECTION IS FOR 110—125-VOLT AC, 60 HZ, 30-AMPERE SUPPLY or WARNING:THIS CONNECTION IS FOR 208Y/120-VOLT OR 120/240-VOLT AC, 3-POLE, 4-WIRE, 60 HZ, _______ AMPERE SUPPLY. followed by DO NOT EXCEED THE CIRCUIT RATING. EXCEEDINGTHE CIRCUIT RATING CAN CAUSE A FIRE AND RESULTIN DEATH OR SERIOUS INJURY. The correct ampere rating shall be marked in the blank space and the label shall meet the requirements in 110.21(B). [552.44(D)](https://2023.antflix.net#552.44(D)) | https://2023.antflix.net#552.44(D) |
Chaptewr 5 Special Occupancies | 552.44(E) | The point of entrance of a feeder assembly shall be located on either side or the rear, within 450 mm (18 in.), of an outside wall. FIGURE 552.44(C)(1) Attachment Cap and Receptacle Configurations. [552.44(E)](https://2023.antflix.net#552.44(E)) | https://2023.antflix.net#552.44(E) |
Chaptewr 5 Special Occupancies | 552.45(A) | A listed and appropriately rated panelboard shall be used. The grounded conductor termination bar shall be insulated from the enclosure as provided in 552.55(C). An equipment grounding terminal bar shall be attached inside the metal enclosure of the panelboard. [552.45(A)](https://2023.antflix.net#552.45(A)) | https://2023.antflix.net#552.45(A) |
Chaptewr 5 Special Occupancies | 552.45(B) | The panelboard shall be installed in a readily accessible location. Working clearance for the panelboard shall be not less than 600 mm (24 in.) wide and 750 mm (30 in.) deep. Exception: Where the panelboard cover is exposed to the inside aisle space, one of the working clearance dimensions shall be permitted to be reduced to a minimum of 550 mm (22 in.). A panelboard shall be considered exposed where the panelboard cover is within 50 mm (2 in.) of the aisle's finished surface or not more than 25 mm (1 in.) from the backside of doors that enclose the space. [552.45(B)](https://2023.antflix.net#552.45(B)) | https://2023.antflix.net#552.45(B) |
Chaptewr 5 Special Occupancies | 552.45(C) | The panelboard shall be of the dead-front type. A main disconnecting means shall be provided where fuses are used or where more than two circuit breakers are employed. A main overcurrent protective device not exceeding the feeder assembly rating shall be provided where more than two branch circuits are employed. [552.45(C)](https://2023.antflix.net#552.45(C)) | https://2023.antflix.net#552.45(C) |
Chaptewr 5 Special Occupancies | 552.46 | Branch circuits shall be determined in accordance with 552.46(A) and (B). [552.46](https://2023.antflix.net#552.46) | https://2023.antflix.net#552.46 |
Chaptewr 5 Special Occupancies | 552.46(A) | A maximum of five 15- or 20-ampere circuits to supply lights, receptacle outlets, and fixed appliances shall be permitted. Such park trailers shall be permitted to be equipped with panelboards rated at 120 volts maximum or 120/240 volts maximum and listed for a 30-ampere-rated feeder assembly. Not more than two 120-volt thermostatically controlled appliances shall be installed in such systems unless appliance isolation switching, energy management systems, or similar methods are used. Exception No. 1: Additional 15- or 20-ampere circuits shall be permitted where a listed energy management system rated at 30 amperes maximum is employed within the system. Exception No. 2: Six 15- or 20-ampere circuits shall be permitted without employing an energy management system, provided that the added sixth circuit serves only the power converter, and the combined load of all six circuits does not exceed the allowable load that was designed for use by the original five circuits. Informational Note: See 210.23(B) for permissible loads. See 552.45(C) for main disconnect and overcurrent protection requirements. [552.46(A)](https://2023.antflix.net#552.46(A)) | https://2023.antflix.net#552.46(A) |
Chaptewr 5 Special Occupancies | 552.46(B) | Where more than five circuits are needed, they shall be determined in accordance with 552.46(B)(1), (B)(2), and (B)(3). [552.46(B)](https://2023.antflix.net#552.46(B)) | https://2023.antflix.net#552.46(B) |
Chaptewr 5 Special Occupancies | 552.46(B)(1) | Based on 33 volt-amperes/m2 (3 VA/ft2) multiplied by the outside dimensions of the park trailer (coupler excluded) divided by 120 volts to determine the number of 15- or 20-ampere lighting area circuits, for example, [552.46(B)(1)] The lighting circuits shall be permitted to serve listed cord-connected kitchen waste disposers and to provide power for supplemental equipment and lighting on gas-fired ranges, ovens, or counter-mounted cooking units. [552.46(B)(1)](https://2023.antflix.net#552.46(B)(1)) | https://2023.antflix.net#552.46(B)(1) |
Chaptewr 5 Special Occupancies | 552.46(B)(2) | Small-appliance branch circuits shall be installed in accordance with 210.1 1(C)(1). [552.46(B)(2)](https://2023.antflix.net#552.46(B)(2)) | https://2023.antflix.net#552.46(B)(2) |
Chaptewr 5 Special Occupancies | 552.46(B)(3) | (including furnace, water heater, space heater, range, and central or room air conditioner, etc.) An individual branch circuit shall be permitted to supply any load for which it is rated. There shall be one or more circuits of adequate rating in accordance with 552.46(B)(3)(a) through (B)(3)(d). Informational Note No. 1: See 210.11(C)(2) for laundry branch circuit. Informational Note No. 2: See Article 440 for central air conditioning.The total rating of fixed appliances shall not exceed 50 percent of the circuit rating if lighting outlets, general-use receptacles, or both are also supplied.For fixed appliances with a motor(s) larger than 1/8 horsepower, the total calculated load shall be based on 125 percent of the largest motor plus the sum of the other loads. Where a branch circuit supplies continuous load(s) or any combination of continuous and noncontinuous loads, the branch-circuit conductor size shall be in accordance with 210.19(A).The rating of a single cord-and-plug-connected appliance supplied by other than an individual branch circuit shall not exceed 80 percent of the circuit rating.The rating of a range branch circuit shall be based on the range demand as specified for ranges in 552.47(B)(5). [552.46(B)(3)](https://2023.antflix.net#552.46(B)(3)) | https://2023.antflix.net#552.46(B)(3) |
Chaptewr 5 Special Occupancies | 552.47 | The following method shall be employed in computing the supply-cord and distribution-panelboard load for each feeder assembly for each park trailer in lieu of the procedure shown in Article 220 and shall be based on a 3-wire, 208Y/120-volt or 120/240-volt supply with 120-volt loads balanced between the two phases of the 3-wire system. [552.47](https://2023.antflix.net#552.47) | https://2023.antflix.net#552.47 |
Chaptewr 5 Special Occupancies | 552.47(A) | Lighting Volt-Amperes: Length times width of park trailer floor (outside dimensions) times 33 volt-amperes/m2 (3 VA/ft2). For example, Length × width × 3 = lighting volt-amperes Small-Appliance Volt-Amperes: Number of circuits times 1500 volt-amperes for each 20-ampere appliance receptacle circuit (see definition of Appliance, Portable, with fine print note) including 1500 volt-amperes for laundry circuit. For example, No. of circuits × 1500 = small-appliance volt-amperes Total: Lighting volt-amperes plus small-appliance voltamperes = total volt-amperes First 3000 total volt-amperes at 100 percent plus remainder at 35 percent = volt-amperes to be divided by 240 volts to obtain current (amperes) per leg. [552.47(A)](https://2023.antflix.net#552.47(A)) | https://2023.antflix.net#552.47(A) |
Chaptewr 5 Special Occupancies | 552.47(B) | Total load for determining power supply is the sum of the following: Lighting and small-appliance load as calculated in 552.47(A).Nameplate amperes for motors and heater loads (exhaust fans, air conditioners, electric, gas, or oil heating). Omit smaller of the heating and cooling loads, except include blower motor if used as air-conditioner evaporator motor. Where an air conditioner is not installed and a 50-ampere power-supply cord is provided, allow 15 amperes per phase for air conditioning.Twenty-five percent of current of largest motor in 552.47(B)(2).Total of nameplate amperes for disposal, dishwasher, water heater, clothes dryer, wall-mounted oven, cooking units. Where the number of these appliances exceeds three, use 75 percent of total.Derive amperes for freestanding range (as distinguished from separate ovens and cooking units) by dividing the following values by 240 volts as shown in Table 552.47(B).If outlets or circuits are provided for other than factory-installed appliances, include the anticipated load.Informational Note: See Informative Annex D, Example D12, for an illustration of the application of this calculation. [552.47(B)](https://2023.antflix.net#552.47(B)) | https://2023.antflix.net#552.47(B) |
Chaptewr 5 Special Occupancies | 552.47(C) | For park trailers, the optional method for calculating lighting and appliance load shown in 220.82 shall be permitted. Table 552.47(B) Minimum Loads for Freestanding Electric Ranges Nameplate Rating (watts) Use (volt-amperes) 0—10,000 80 percent of rating Over 10,000—12,500 8,000 Over 12,500—13,500 8,400 Over 13,500—14,500 8,800 Over 14,500—15,500 9,200 Over 15,500—16,500 9,600 Over 16,500—17,500 10,000 [552.47(C)](https://2023.antflix.net#552.47(C)) | https://2023.antflix.net#552.47(C) |
Chaptewr 5 Special Occupancies | 552.48(A) | Cables and raceways installed in accordance with Articles 320, 322, 330 through 340, 342 through 362, 386, and 388 shall be permitted in accordance with their applicable article, except as otherwise specified in this article. An equipment grounding means shall be provided in accordance with 250.118. [552.48(A)](https://2023.antflix.net#552.48(A)) | https://2023.antflix.net#552.48(A) |
Chaptewr 5 Special Occupancies | 552.48(B) | Where rigid metal conduit or intermediate metal conduit is terminated at an enclosure with a locknut and bushing connection, two locknuts shall be provided, one inside and one outside of the enclosure. All cut ends of conduit and tubing shall be reamed or otherwise finished to remove rough edges. [552.48(B)](https://2023.antflix.net#552.48(B)) | https://2023.antflix.net#552.48(B) |
Chaptewr 5 Special Occupancies | 552.48(C) | Nonmetallic boxes shall be acceptable only with nonmetallic-sheathed cable or nonmetallic raceways. [552.48(C)](https://2023.antflix.net#552.48(C)) | https://2023.antflix.net#552.48(C) |
Chaptewr 5 Special Occupancies | 552.48(D) | In walls and ceilings constructed of wood or other combustible material, boxes and fittings shall be flush with the finished surface or project therefrom. [552.48(D)](https://2023.antflix.net#552.48(D)) | https://2023.antflix.net#552.48(D) |
Chaptewr 5 Special Occupancies | 552.48(E) | Wall and ceiling boxes shall be mounted in accordance with 314.23. Exception No. 1: Snap-in-type boxes or boxes provided with special wall or ceiling brackets that securely fasten boxes in walls or ceilings shall be permitted. Exception No. 2: A wooden plate providing a 38-mm (11/2-in.) minimum width backing around the box and of a thickness of 13 mm (1/2 in.) or greater (actual) attached directly to the wall panel shall be considered as approved means for mounting outlet boxes. [552.48(E)](https://2023.antflix.net#552.48(E)) | https://2023.antflix.net#552.48(E) |
Chaptewr 5 Special Occupancies | 552.48(F) | The sheath of nonmetallic-sheathed cable, and the armor of metal-clad cable and Type AC cable, shall be continuous between outlet boxes and other enclosures. [552.48(F)](https://2023.antflix.net#552.48(F)) | https://2023.antflix.net#552.48(F) |
Chaptewr 5 Special Occupancies | 552.48(G) | Metal-clad, Type AC, or nonmetallic-sheathed cables and electrical nonmetallic tubing shall be permitted to pass through the centers of the wide side of 2 by 4 wood studs. However, they shall be protected where they pass through 2 by 2 wood studs or at other wood studs or frames where the cable or tubing would be less than 32 mm (11/4 in.) from the inside or outside surface. Steel plates on each side of the cable or tubing, or a steel tube, with not less than 1.35 mm (0.053 in.) wall thickness, shall be installed to protect the cable or tubing. These plates or tubes shall be securely held in place. Where nonmetallic-sheathed cables pass through punched, cut, or drilled slots or holes in metal members, the cable shall be protected by bushings or grommets securely fastened in the opening prior to installation of the cable. [552.48(G)](https://2023.antflix.net#552.48(G)) | https://2023.antflix.net#552.48(G) |
Chaptewr 5 Special Occupancies | 552.48(H) | Where connected with cable connectors or clamps, cables shall be secured and supported within 300 mm (12 in.) of outlet boxes, panelboards, and splice boxes on appliances. Supports and securing shall be provided at intervals not exceeding 1.4 m (41/2 ft) at other places. [552.48(H)](https://2023.antflix.net#552.48(H)) | https://2023.antflix.net#552.48(H) |
Chaptewr 5 Special Occupancies | 552.48(I) | Nonmetallic-sheathed cables shall be secured and supported within 200 mm (8 in.) of a nonmetallic outlet box without cable clamps. Where wiring devices with integral enclosures are employed with a loop of extra cable to permit future replacement of the device, the cable loop shall be considered as an integral portion of the device. [552.48(I)](https://2023.antflix.net#552.48(I)) | https://2023.antflix.net#552.48(I) |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.