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Chaptewr 5 Special Occupancies | 517.34(B) | It shall be permitted to control task illumination on the critical branch. [517.34(B)](https://2023.antflix.net#517.34(B)) | https://2023.antflix.net#517.34(B) |
Chaptewr 5 Special Occupancies | 517.34(C) | The critical branch shall be permitted to be subdivided into two or more branches. [99:6.7.5.1.3.1] Informational Note: It is important to analyze the consequences of supplying an area with only critical branch power when failure occurs between the area and the transfer switch. Some proportion of normal and critical po... | https://2023.antflix.net#517.34(C) |
Chaptewr 5 Special Occupancies | 517.35 | The equipment branch shall be installed and connected to the alternate power source such that the equipment described in 517.35(A) is automatically restored to operation at appropriate time-lag intervals following the energizing of the life safety and critical branches. [99:6.7.5.1.4.2(A)] The arrangement of the connec... | https://2023.antflix.net#517.35 |
Chaptewr 5 Special Occupancies | 517.35(A) | The following equipment shall be permitted to be arranged for delayed automatic connection to the alternate power source: Central suction systems serving medical and surgical functions, including controls, with such suction systems permitted to be placed on the critical branchSump pumps and other equipment required to ... | https://2023.antflix.net#517.35(A) |
Chaptewr 5 Special Occupancies | 517.35(B) | The following equipment shall be permitted to be arranged for either delayed automatic or manual connection to the alternate power source: Heating equipment to provide heating for operating, delivery, labor, recovery, intensive care, coronary care, nurseries, infection/isolation rooms, emergency treatment spaces, and g... | https://2023.antflix.net#517.35(B) |
Chaptewr 5 Special Occupancies | 517.40 | Informational Note No. 1: Nursing homes and other limited care facilities can contain Category 1 and/or Category 2 patient care spaces, depending on the design and type of care administered in the facility. For Category 1 spaces, see 517.29 through 517.35. For Category 2 spaces not served by Type 1 essential electrical... | https://2023.antflix.net#517.40 |
Chaptewr 5 Special Occupancies | 517.40(A) | The requirements of 517.40(C) through 517.44 shall apply to Category 2 spaces. Exception: The requirements of 517.40(C) through 517.44 shall not apply to freestanding buildings used as nursing homes and limited care facilities if the following apply: (1) Admitting and discharge policies are maintained that preclude the... | https://2023.antflix.net#517.40(A) |
Chaptewr 5 Special Occupancies | 517.40(B) | For those nursing homes and limited care facilities that admit patients who need to be sustained by electrical life-support equipment, the essential electrical system from the source to the portion of the facility where such patients are treated shall comply with the requirements of 517.29 through 517.35. [517.40(B)](h... | https://2023.antflix.net#517.40(B) |
Chaptewr 5 Special Occupancies | 517.40(C) | Nursing homes and limited care facilities that are contiguous or located on the same site with a hospital shall be permitted to have their essential electrical systems supplied by the hospital. [517.40(C)](https://2023.antflix.net#517.40(C)) | https://2023.antflix.net#517.40(C) |
Chaptewr 5 Special Occupancies | 517.41(A) | Essential electrical systems (EES) shall have two or more independent sources (or sets of sources). One on-site source (or sets of sources) shall be sized to supply the entire EES. The other independent source (or sets of sources) shall be sized to supply the entire EES and shall be permitted to be located on-site or o... | https://2023.antflix.net#517.41(A) |
Chaptewr 5 Special Occupancies | 517.41(B) | EES components shall be located to minimize interruptions caused by natural forces common to the area (e.g., storms, floods, earthquakes, or hazards created by adjoining structures or activities). [99:6.2.4.1] Installations of electrical services shall be located to reduce possible interruption of normal electrical ser... | https://2023.antflix.net#517.41(B) |
Chaptewr 5 Special Occupancies | 517.42(A) | The [Type 2] essential electrical system shall be divided into the following two branches: Life safety branchEquipment branch [99:6.7.6.2.1.2]The division between the branches shall occur at transfer switches where more than one transfer switch is required. [99:6.7.2.2.1]Informational Note No. 1: Type 2 essential elect... | https://2023.antflix.net#517.42(A) |
Chaptewr 5 Special Occupancies | 517.42(B) | The number of transfer switches to be used shall be based upon reliability, design, and load considerations. [99:6.7.2.2.3] Transfer switches shall be in accordance with one of the following:Each branch of the essential electrical system shall have one or more transfer switches. [99:6.7.2.2.3.1]One transfer switch shal... | https://2023.antflix.net#517.42(B) |
Chaptewr 5 Special Occupancies | 517.42(C) | The essential electrical system shall have capacity to meet the demand for the operation of all functions and equipment to be served by each branch at one time. [517.42(C)](https://2023.antflix.net#517.42(C)) | https://2023.antflix.net#517.42(C) |
Chaptewr 5 Special Occupancies | 517.42(D) | The life safety branch and equipment branch shall be kept entirely independent of all other wiring and equipment. [99:6.7.6.3.1] These circuits shall not enter the same raceways, boxes, or cabinets with other wiring except as follows:In transfer switchesIn exit or emergency luminaires supplied from two sourcesIn a comm... | https://2023.antflix.net#517.42(D) |
Chaptewr 5 Special Occupancies | 517.42(E) | The electrical receptacles or the cover plates for the electrical receptacles supplied from the life safety or equipment branches shall have a distinctive color or marking so as to be readily identifiable. [99:6.7.6.3.2] Informational Note: If color is used to identify these receptacles, the same color should be used t... | https://2023.antflix.net#517.42(E) |
Chaptewr 5 Special Occupancies | 517.43 | The life safety and equipment branches shall be installed and connected to the alternate source of power specified in 517.41 so that all functions specified herein for the life safety and equipment branches are automatically restored to operation within 10 seconds after interruption of the normal source. [99:6.7.6.4.1]... | https://2023.antflix.net#517.43 |
Chaptewr 5 Special Occupancies | 517.43(A) | Illumination of means of egress as is necessary for corridors, passageways, stairways, landings, and exit doors and all ways of approach to exits. Switching arrangement to transfer patient corridor lighting from general illumination circuits shall be permitted if only one of two circuits can be selected and both circui... | https://2023.antflix.net#517.43(A) |
Chaptewr 5 Special Occupancies | 517.43(B) | Exit signs and exit directional signs. Informational Note: See NFPA 101-2021, Life Safety Code, Section 7.10. [517.43(B)](https://2023.antflix.net#517.43(B)) | https://2023.antflix.net#517.43(B) |
Chaptewr 5 Special Occupancies | 517.43(C) | Alarm and alerting systems, including the following: Fire alarmsInformational Note No. 1: See NFPA 101-2021, Life Safety Code, Sections 9.6 and 18.3.4.Alarms required for systems used for the piping of nonflammable medical gasesInformational Note No. 2: See NFPA 99-2021, Health Care Facilities Code, 6.7.5.1.2.5. [517.4... | https://2023.antflix.net#517.43(C) |
Chaptewr 5 Special Occupancies | 517.43(D) | Communications systems, where used for issuing instructions during emergency conditions. [99:6.7.5.1.2.4(3)] [517.43(D)](https://2023.antflix.net#517.43(D)) | https://2023.antflix.net#517.43(D) |
Chaptewr 5 Special Occupancies | 517.43(E) | Task illumination and select receptacles at the generator set location and essential electrical system transfer switch locations. [517.43(E)](https://2023.antflix.net#517.43(E)) | https://2023.antflix.net#517.43(E) |
Chaptewr 5 Special Occupancies | 517.43(F) | Elevator cab lighting, control, communications, and signal systems. [99:6.7.5.1.2.4(5)] [517.43(F)](https://2023.antflix.net#517.43(F)) | https://2023.antflix.net#517.43(F) |
Chaptewr 5 Special Occupancies | 517.43(G) | Generator accessories, including, but not limited to, the transfer fuel pump, electrically operated louvers, and other generator accessories essential for generator operation shall be arranged for automatic connection to the alternate power source. [99:6.7.6.2.1.6(C)] [517.43(G)](https://2023.antflix.net#517.43(G)) | https://2023.antflix.net#517.43(G) |
Chaptewr 5 Special Occupancies | 517.44 | The equipment branch shall be installed and connected to the alternate power source such that equipment described in 517.35(A)(6) is automatically restored to operation at appropriate time-lag intervals following the energizing of the life safety and critical branches. [99:6.7.5.1.4.2(A)] The equipment branch arrangeme... | https://2023.antflix.net#517.44 |
Chaptewr 5 Special Occupancies | 517.44(A) | The following equipment shall be permitted to be connected to the equipment branch and shall be arranged for delayed automatic connection to the alternate power source: Task illumination and select receptacles in the following: [99:6.7.6.2.1.6(D)(1)]Patient care spaces [99:6.7.6.2.1.6(D)(1)(a)]Medication preparation sp... | https://2023.antflix.net#517.44(A) |
Chaptewr 5 Special Occupancies | 517.44(B) | The equipment specified in 517.44(B)(1) through (B)(4) shall be permitted to be connected to the equipment branch and shall be arranged for either delayed-automatic or manual connection to the alternate power source. [517.44(B)](https://2023.antflix.net#517.44(B)) | https://2023.antflix.net#517.44(B) |
Chaptewr 5 Special Occupancies | 517.44(B)(1) | Heating of general patient rooms during disruption of the normal source shall not be required under any of the following conditions: The outside design temperature is higher than —6.7°C (20°F).The outside design temperature is lower than —6.7°C (20°F) and, where a selected room(s) is provided for the needs of all confi... | https://2023.antflix.net#517.44(B)(1) |
Chaptewr 5 Special Occupancies | 517.44(B)(2) | In instances where interruptions of power would result in elevators stopping between floors, throw-over facilities shall be provided to allow the temporary operation of any elevator for the release of passengers. [517.44(B)(2)](https://2023.antflix.net#517.44(B)(2)) | https://2023.antflix.net#517.44(B)(2) |
Chaptewr 5 Special Occupancies | 517.44(B)(3) | Additional illumination, receptacles, and equipment shall be permitted to be connected only to the equipment branch. [517.44(B)(3)](https://2023.antflix.net#517.44(B)(3)) | https://2023.antflix.net#517.44(B)(3) |
Chaptewr 5 Special Occupancies | 517.44(B)(4) | Where one switch serves multiple systems as permitted in 517.43, transfer for all loads shall be nondelayed automatic. [99:6.7.6.2.1.6(E)] Informational Note: See 517.43(G) for elevator cab lighting, control, and signal system requirements. [99:A.6.7.6.2.1.6(E)(2)] [517.44(B)(4)](https://2023.antflix.net#517.44(B)(4)) | https://2023.antflix.net#517.44(B)(4) |
Chaptewr 5 Special Occupancies | 517.45(A) | If required by the governing body, the essential electrical distribution system for Category 3 patient care spaces shall be comprised of an alternate power system capable of supplying a limited amount of lighting and power service for the orderly cessation of procedures during a time normal electrical service is interr... | https://2023.antflix.net#517.45(A) |
Chaptewr 5 Special Occupancies | 517.45(B) | Where electrical life support equipment is required, the essential electrical distribution system shall be as described in 517.29 through 517.30. [517.45(B)](https://2023.antflix.net#517.45(B)) | https://2023.antflix.net#517.45(B) |
Chaptewr 5 Special Occupancies | 517.45(C) | Where Category 1 patient care spaces are present, the essential electrical distribution system shall be in accordance with 517.29 through 517.30. [517.45(C)](https://2023.antflix.net#517.45(C)) | https://2023.antflix.net#517.45(C) |
Chaptewr 5 Special Occupancies | 517.45(D) | Where Category 2 patient care spaces are present, the essential electrical distribution system shall be in accordance with 517.40 through 517.45. [517.45(D)](https://2023.antflix.net#517.45(D)) | https://2023.antflix.net#517.45(D) |
Chaptewr 5 Special Occupancies | 517.45(E) | If required, alternate power sources acceptable to the governing body shall comply with the requirements of NFPA 99-2021, Health Care Facilities Code. [517.45(E)](https://2023.antflix.net#517.45(E)) | https://2023.antflix.net#517.45(E) |
Chaptewr 5 Special Occupancies | divider_21_IV | Informational Note: See NFPA 99-2021, Health Care Facilities Code, for further information regarding safeguards for anesthetizing locations. [divider_21_IV](https://2023.antflix.net#divider_21_IV) | https://2023.antflix.net#divider_21_IV |
Chaptewr 5 Special Occupancies | 517.60 | Informational Note: See 517.20 if either of the anesthetizing locations in 517.60(A) or 517.60(B) is designated a wet procedure location. [517.60](https://2023.antflix.net#517.60) | https://2023.antflix.net#517.60 |
Chaptewr 5 Special Occupancies | 517.60(A)(1) | In a location where flammable anesthetics are employed, the entire area shall be considered to be a Class I, Division 1 location that extends upward to a level 1.52 m (5 ft) above the floor. The remaining volume up to the structural ceiling is considered to be above a hazardous (classified) location. [517.60(A)(1)](htt... | https://2023.antflix.net#517.60(A)(1) |
Chaptewr 5 Special Occupancies | 517.60(A)(2) | Any room or location in which flammable anesthetics or volatile flammable disinfecting agents are stored shall be considered to be a Class I, Division 1 location from floor to ceiling. [517.60(A)(2)](https://2023.antflix.net#517.60(A)(2)) | https://2023.antflix.net#517.60(A)(2) |
Chaptewr 5 Special Occupancies | 517.60(B) | Any inhalation anesthetizing location designated for the exclusive use of nonflammable anesthetizing agents shall be considered to be an unclassified location. [517.60(B)](https://2023.antflix.net#517.60(B)) | https://2023.antflix.net#517.60(B) |
Chaptewr 5 Special Occupancies | 517.61(A)(1) | Except as permitted in 517.160, each power circuit within, or partially within, a flammable anesthetizing location as referred to in 517.60 shall be isolated from any distribution system by the use of an isolated power system. [517.61(A)(1)](https://2023.antflix.net#517.61(A)(1)) | https://2023.antflix.net#517.61(A)(1) |
Chaptewr 5 Special Occupancies | 517.61(A)(2) | Where an isolated power system is utilized, the isolated power equipment shall be listed as isolated power equipment, and the isolated power system shall be designed and installed in accordance with 517.160. [517.61(A)(2)](https://2023.antflix.net#517.61(A)(2)) | https://2023.antflix.net#517.61(A)(2) |
Chaptewr 5 Special Occupancies | 517.61(A)(3) | In hazardous (classified) locations referred to in 517.60, all fixed wiring and equipment and all portable equipment, including lamps and other utilization equipment, operating at more than 10 volts between conductors shall comply with the requirements of 501.1 through 501.25, and 501.100 through 501.150, and 501.30(A)... | https://2023.antflix.net#517.61(A)(3) |
Chaptewr 5 Special Occupancies | 517.61(A)(4) | Where a box, fitting, or enclosure is partially, but not entirely, within a hazardous (classified) location(s), the hazardous (classified) location(s) shall be considered to be extended to include the entire box, fitting, or enclosure. [517.61(A)(4)](https://2023.antflix.net#517.61(A)(4)) | https://2023.antflix.net#517.61(A)(4) |
Chaptewr 5 Special Occupancies | 517.61(A)(5) | Receptacles and attachment plugs in a hazardous (classified) location(s) shall be listed for use in Class I, Group C hazardous (classified) locations and shall have provision for the connection of an equipment grounding conductor. [517.61(A)(5)](https://2023.antflix.net#517.61(A)(5)) | https://2023.antflix.net#517.61(A)(5) |
Chaptewr 5 Special Occupancies | 517.61(A)(6) | Flexible cords used in hazardous (classified) locations for connection to portable utilization equipment, including lamps operating at more than 8 volts between conductors, shall be of a type approved for extra-hard usage in accordance with Table 400.4 and shall include an additional equipment grounding conductor. [517... | https://2023.antflix.net#517.61(A)(6) |
Chaptewr 5 Special Occupancies | 517.61(A)(7) | A storage device for the flexible cord shall be provided and shall not subject the cord to bending at a radius of less than 75 mm (3 in.). [517.61(A)(7)](https://2023.antflix.net#517.61(A)(7)) | https://2023.antflix.net#517.61(A)(7) |
Chaptewr 5 Special Occupancies | 517.61(B)(1) | Wiring above a hazardous (classified) location referred to in 517.60 shall be installed in rigid metal conduit, electrical metallic tubing, intermediate metal conduit, Type MI cable, or Type MC cable that employs a continuous, gas/vaportight metal sheath. [517.61(B)(1)](https://2023.antflix.net#517.61(B)(1)) | https://2023.antflix.net#517.61(B)(1) |
Chaptewr 5 Special Occupancies | 517.61(B)(2) | Installed equipment that may produce arcs, sparks, or particles of hot metal, such as lamps and lampholders for fixed lighting, cutouts, switches, generators, motors, or other equipment having make-and-break or sliding contacts, shall be of the totally enclosed type or be constructed so as to prevent escape of sparks o... | https://2023.antflix.net#517.61(B)(2) |
Chaptewr 5 Special Occupancies | 517.61(B)(3) | Surgical and other luminaires shall conform to 501.130(B). Exception No. 1: The surface temperature limitations set forth in 501.130(B)(1) shall not apply. Exception No. 2: Integral or pendant switches that are located above and cannot be lowered into the hazardous (classified) location(s) shall not be required to be e... | https://2023.antflix.net#517.61(B)(3) |
Chaptewr 5 Special Occupancies | 517.61(B)(4) | Listed seals shall be provided in conformance with 501.15, and 501.15(A)(4) shall apply to horizontal as well as to vertical boundaries of the defined hazardous (classified) locations. [517.61(B)(4)](https://2023.antflix.net#517.61(B)(4)) | https://2023.antflix.net#517.61(B)(4) |
Chaptewr 5 Special Occupancies | 517.61(B)(5) | Receptacles and attachment plugs located above hazardous (classified) anesthetizing locations shall be listed for hospital use for services of prescribed voltage, frequency, rating, and number of conductors with provision for the connection of the equipment grounding conductor. This requirement shall apply to attachmen... | https://2023.antflix.net#517.61(B)(5) |
Chaptewr 5 Special Occupancies | 517.61(B)(6) | Receptacles and attachment plugs rated 250 volts, for connection of 50-ampere and 60-ampere ac medical equipment for use above hazardous (classified) locations, shall be arranged so that the 60-ampere receptacle will accept either the 50-ampere or the 60-ampere plug. Fifty-ampere receptacles shall be designed so as not... | https://2023.antflix.net#517.61(B)(6) |
Chaptewr 5 Special Occupancies | 517.61(C)(1) | Wiring serving unclassified locations, as defined in 517.60, shall be installed in a metal raceway system or cable assembly. The metal raceway system or cable armor or sheath assembly shall qualify as an equipment grounding conductor in accordance with 250.118. Type MC and Type MI cable shall have an outer metal armor,... | https://2023.antflix.net#517.61(C)(1) |
Chaptewr 5 Special Occupancies | 517.61(C)(2) | Receptacles and attachment plugs installed and used in unclassified locations shall be listed "hospital grade" for services of prescribed voltage, frequency, rating, and number of conductors with provision for connection of the equipment grounding conductor. This requirement shall apply to 2-pole, 3-wire grounding type... | https://2023.antflix.net#517.61(C)(2) |
Chaptewr 5 Special Occupancies | 517.61(C)(3) | Receptacles and attachment plugs rated 250 volts, for connection of 50-ampere and 60-ampere ac medical equipment for use in unclassified locations, shall be arranged so that the 60-ampere receptacle will accept either the 50-ampere or the 60-ampere plug. Fifty-ampere receptacles shall be designed so as not to accept th... | https://2023.antflix.net#517.61(C)(3) |
Chaptewr 5 Special Occupancies | 517.62 | In any anesthetizing area, all metal raceways and metal-sheathed cables and all normally non—current-carrying conductive portions of fixed electrical equipment shall be connected to an equipment grounding conductor. Grounding and bonding in Class I locations shall comply with 501.30. Exception: Equipment operating at n... | https://2023.antflix.net#517.62 |
Chaptewr 5 Special Occupancies | 517.63(A) | One or more battery-powered lighting units shall be provided and shall be permitted to be wired to the critical lighting circuit in the area and connected ahead of any local switches. [517.63(A)](https://2023.antflix.net#517.63(A)) | https://2023.antflix.net#517.63(A) |
Chaptewr 5 Special Occupancies | 517.63(B) | Branch circuits supplying only listed, fixed, therapeutic and diagnostic equipment, permanently installed above the hazardous (classified) location and in unclassified locations, shall be permitted to be supplied from a normal grounded service, single- or three-phase system, provided the following apply: Wiring for gro... | https://2023.antflix.net#517.63(B) |
Chaptewr 5 Special Occupancies | 517.63(C) | Branch circuits supplying only fixed lighting shall be permitted to be supplied by a normal grounded service, provided the following apply: Such luminaires are located at least 2.5 m (8 ft) above the floor.All conductive surfaces of luminaires are connected to an equipment grounding conductor.Wiring for circuits supply... | https://2023.antflix.net#517.63(C) |
Chaptewr 5 Special Occupancies | 517.63(D) | Wall-mounted remote-control stations for remote-control switches operating at 24 volts or less shall be permitted to be installed in any anesthetizing location. [517.63(D)](https://2023.antflix.net#517.63(D)) | https://2023.antflix.net#517.63(D) |
Chaptewr 5 Special Occupancies | 517.63(E) | Where an isolated power system is utilized, the isolated power equipment shall be listed as isolated power equipment. Isolated power system equipment and its supply circuit shall be permitted to be located in an anesthetizing location, provided it is installed above a hazardous (classified) location or in an unclassifi... | https://2023.antflix.net#517.63(E) |
Chaptewr 5 Special Occupancies | 517.63(F) | Except as permitted above, each power circuit within, or partially within, a flammable anesthetizing location as referred to in 517.60 shall be isolated from any distribution system supplying other-than-anesthetizing locations. [517.63(F)](https://2023.antflix.net#517.63(F)) | https://2023.antflix.net#517.63(F) |
Chaptewr 5 Special Occupancies | 517.64(A) | Low-voltage equipment that is frequently in contact with the bodies of persons or has exposed current-carrying elements shall comply with one of the following: Operate on an electrical potential of 10 volts or lessBe approved as intrinsically safe or double-insulated equipmentBe moisture resistant [517.64(A)](https://2... | https://2023.antflix.net#517.64(A) |
Chaptewr 5 Special Occupancies | 517.64(B) | Power shall be supplied to low-voltage equipment from one of the following: An individual portable isolating transformer (autotransformers shall not be used) connected to an isolated power circuit receptacle by means of an appropriate cord and attachment plugA common low-voltage isolating transformer installed in an un... | https://2023.antflix.net#517.64(B) |
Chaptewr 5 Special Occupancies | 517.64(C) | Isolating-type transformers for supplying low-voltage circuits shall have both of the following: Approved means for insulating the secondary circuit from the primary circuitThe core and case connected to an equipment grounding conductor [517.64(C)](https://2023.antflix.net#517.64(C)) | https://2023.antflix.net#517.64(C) |
Chaptewr 5 Special Occupancies | 517.64(D) | Resistance or impedance devices shall be permitted to control low-voltage equipment but shall not be used to limit the maximum available voltage to the equipment. [517.64(D)](https://2023.antflix.net#517.64(D)) | https://2023.antflix.net#517.64(D) |
Chaptewr 5 Special Occupancies | 517.64(E) | Battery-powered appliances shall not be capable of being charged while in operation unless their charging circuitry incorporates an integral isolating-type transformer. [517.64(E)](https://2023.antflix.net#517.64(E)) | https://2023.antflix.net#517.64(E) |
Chaptewr 5 Special Occupancies | 517.64(F) | Any receptacle or attachment plug used on low-voltage circuits shall be of a type that does not permit interchangeable connection with circuits of higher voltage. Informational Note: Any interruption of the circuit, even circuits as low as 10 volts, either by any switch or loose or defective connections anywhere in the... | https://2023.antflix.net#517.64(F) |
Chaptewr 5 Special Occupancies | 517.70 | Nothing in this part shall be construed as specifying safeguards against possible radiation or magnetic fields. Informational Note No. 1: Radiation safety and performance requirements of several classes of X-ray equipment are regulated under Public Law 90-602 and are enforced by the Department of Health and Human Servi... | https://2023.antflix.net#517.70 |
Chaptewr 5 Special Occupancies | 517.71(A) | Fixed and stationary diagnostic imaging and treatment equipment shall be connected to the power supply by means of a wiring method complying with applicable requirements of Chapters 1 through 4 of this Code, as modified by this article. Exception: Equipment properly supplied by a branch circuit rated at not over 30 amp... | https://2023.antflix.net#517.71(A) |
Chaptewr 5 Special Occupancies | 517.71(B) | Individual branch circuits shall not be required for portable, mobile, and transportable medical diagnostic imaging and treatment equipment requiring a capacity of not over 60 amperes. [517.71(B)](https://2023.antflix.net#517.71(B)) | https://2023.antflix.net#517.71(B) |
Chaptewr 5 Special Occupancies | 517.71(C) | Circuits and equipment operated on a supply circuit of over 1000 volts shall comply with Parts I through IV of Article 495. [517.71(C)](https://2023.antflix.net#517.71(C)) | https://2023.antflix.net#517.71(C) |
Chaptewr 5 Special Occupancies | 517.72(A) | A disconnecting means rated for at least 50 percent of the input required for the momentary rating or 100 percent of the input required for the long-time rating of the diagnostic imaging and treatment equipment, whichever is greater, shall be provided in the supply circuit. [517.72(A)](https://2023.antflix.net#517.72(A... | https://2023.antflix.net#517.72(A) |
Chaptewr 5 Special Occupancies | 517.72(B) | The disconnecting means shall be operable from a location readily accessible from the control location. [517.72(B)](https://2023.antflix.net#517.72(B)) | https://2023.antflix.net#517.72(B) |
Chaptewr 5 Special Occupancies | 517.72(C) | For equipment connected to a 120-volt branch circuit of 30 amperes or less, a grounding-type attachment plug and receptacle of proper rating shall be permitted to serve as a disconnecting means. [517.72(C)](https://2023.antflix.net#517.72(C)) | https://2023.antflix.net#517.72(C) |
Chaptewr 5 Special Occupancies | 517.73(A) | The ampacity of supply branch-circuit conductors and the current rating of overcurrent protective devices shall not be less than 50 percent of the momentary rating or 100 percent of the long-time rating, whichever is greater. [517.73(A)](https://2023.antflix.net#517.73(A)) | https://2023.antflix.net#517.73(A) |
Chaptewr 5 Special Occupancies | 517.73(B) | The ampacity of supply feeders and the current rating of overcurrent protective devices supplying two or more branch circuits supplying diagnostic imaging and treatment equipment shall not be less than 50 percent of the momentary demand rating of the largest unit, plus 25 percent of the momentary demand rating of the n... | https://2023.antflix.net#517.73(B) |
Chaptewr 5 Special Occupancies | 517.74(A) | The number of control circuit conductors installed in a raceway shall be determined in accordance with 300.17. [517.74(A)](https://2023.antflix.net#517.74(A)) | https://2023.antflix.net#517.74(A) |
Chaptewr 5 Special Occupancies | 517.74(B) | Size 18 AWG or 16 AWG fixture wires in accordance with 724.49 and flexible cords shall be permitted for the control and operating circuits of diagnostic imaging and treatment equipment and auxiliary equipment where protected by not larger than 20-ampere overcurrent devices. [517.74(B)](https://2023.antflix.net#517.74(B... | https://2023.antflix.net#517.74(B) |
Chaptewr 5 Special Occupancies | 517.76 | Transformers and capacitors that are part of diagnostic imaging and treatment equipment shall not be required to comply with Parts I and II of Articles 450 and 460. Capacitors shall be mounted within enclosures of insulating material or grounded metal. [517.76](https://2023.antflix.net#517.76) | https://2023.antflix.net#517.76 |
Chaptewr 5 Special Occupancies | 517.77 | Cables with grounded shields shall be permitted to be installed in cable trays or cable troughs along with control and power supply conductors without the need for barriers to separate the wiring. [517.77](https://2023.antflix.net#517.77) | https://2023.antflix.net#517.77 |
Chaptewr 5 Special Occupancies | 517.78(A) | All high-voltage parts shall be mounted within grounded enclosures. The connection from the high-voltage equipment to other high-voltage components shall be made with high-voltage shielded cables. [517.78(A)](https://2023.antflix.net#517.78(A)) | https://2023.antflix.net#517.78(A) |
Chaptewr 5 Special Occupancies | 517.78(B) | Low-voltage cables connecting to oil-filled units that are not completely sealed, such as transformers, condensers, oil coolers, and high-voltage switches, shall have insulation of the oil-resistant type. [517.78(B)](https://2023.antflix.net#517.78(B)) | https://2023.antflix.net#517.78(B) |
Chaptewr 5 Special Occupancies | 517.78(C) | Non-current-carrying metal parts of diagnostic imaging and treatment equipment (e.g., controls, tables, transformer tanks, shielded cables) shall be connected to an equipment grounding conductor in accordance with Part VII of Article 250, as modified by 517.13(A) and (B). [517.78(C)](https://2023.antflix.net#517.78(C)) | https://2023.antflix.net#517.78(C) |
Chaptewr 5 Special Occupancies | 517.80 | Equivalent insulation and isolation to that required for the electrical distribution systems in patient care areas shall be provided for communications, signaling systems, data system circuits, fire alarm systems, and systems less than 120 volts, nominal. Class 2 and Class 3 signaling and communications systems, Class ... | https://2023.antflix.net#517.80 |
Chaptewr 5 Special Occupancies | 517.81 | In other-than-patient-care spaces, installations shall be in accordance with other parts of this Code. [517.81](https://2023.antflix.net#517.81) | https://2023.antflix.net#517.81 |
Chaptewr 5 Special Occupancies | 517.82(A) | Permanently installed signal cabling from an appliance in a patient location to remote appliances shall employ a signal transmission system that prevents hazardous grounding interconnection of the appliances. Informational Note: See 517.13(A) for additional grounding requirements in patient care spaces. [517.82(A)](htt... | https://2023.antflix.net#517.82(A) |
Chaptewr 5 Special Occupancies | 517.82(B) | Common signal grounding wires (i.e., the chassis ground for single-ended transmission) shall be permitted to be used between appliances all located within the patient care vicinity, provided the appliances are served from the same reference grounding point. [517.82(B)](https://2023.antflix.net#517.82(B)) | https://2023.antflix.net#517.82(B) |
Chaptewr 5 Special Occupancies | 517.160(A)(1) | Each isolated power circuit shall be controlled by a switch or circuit breaker that has a disconnecting pole in each isolated circuit conductor to simultaneously disconnect all power. Such isolation shall be accomplished by means of one or more isolation transformers, by means of generator sets, or by means of electric... | https://2023.antflix.net#517.160(A)(1) |
Chaptewr 5 Special Occupancies | 517.160(A)(2) | Circuits supplying primaries of isolating transformers shall operate at not more than 600 volts between conductors and shall be provided with proper overcurrent protection. The secondary voltage of such transformers shall not exceed 600 volts between conductors of each circuit. All circuits supplied from such secondari... | https://2023.antflix.net#517.160(A)(2) |
Chaptewr 5 Special Occupancies | 517.160(A)(3) | The isolating transformers, motor generator sets, batteries and battery chargers, and associated primary or secondary overcurrent devices shall not be installed in hazardous (classified) locations. The isolated secondary circuit wiring extending into a hazardous anesthetizing location shall be installed in accordance w... | https://2023.antflix.net#517.160(A)(3) |
Chaptewr 5 Special Occupancies | 517.160(A)(4) | An isolation transformer shall not serve more than one operating room except as covered in 517.160(A)(4)(a) and (A)(4)(b). For purposes of this section, anesthetic induction rooms are considered part of the operating room or rooms served by the induction rooms.Induction Rooms. Where an induction room serves more than o... | https://2023.antflix.net#517.160(A)(4) |
Chaptewr 5 Special Occupancies | 517.160(A)(5) | The isolated circuit conductors shall be identified as follows: Isolated Conductor No. 1 - Orange with at least one distinctive colored stripe other than white, green, or gray along the entire length of the conductorIsolated Conductor No. 2 - Brown with at least one distinctive colored stripe other than white, green, o... | https://2023.antflix.net#517.160(A)(5) |
Chaptewr 5 Special Occupancies | 517.160(A)(6) | Wire-pulling compounds that increase the dielectric constant shall not be used on the secondary conductors of the isolated power supply. Informational Note No. 1: It is desirable to limit the size of the isolation transformer to 10 kVA or less and to use conductor insulation with low leakage to meet impedance requireme... | https://2023.antflix.net#517.160(A)(6) |
Chaptewr 5 Special Occupancies | 517.160(B)(1) | In addition to the usual control and over-current protective devices, each isolated power system shall be provided with a listed continually operating line isolation monitor that indicates total hazard current. The monitor shall be designed such that a green signal lamp, conspicuously visible to persons in each area se... | https://2023.antflix.net#517.160(B)(1) |
Chaptewr 5 Special Occupancies | 517.160(B)(2) | The line isolation monitor shall be designed to have sufficient internal impedance such that, when properly connected to the isolated system, the maximum internal current that can flow through the line isolation monitor, when any point of the isolated system is grounded, shall be 1 mA. Exception: The line isolation mon... | https://2023.antflix.net#517.160(B)(2) |
Chaptewr 5 Special Occupancies | 517.160(B)(3) | An ammeter calibrated in the total hazard current of the system (contribution of the fault hazard current plus monitor hazard current) shall be mounted in a plainly visible place on the line isolation monitor with the "alarm on" zone at approximately the center of the scale. Exception: The line isolation monitor shall ... | https://2023.antflix.net#517.160(B)(3) |
Chaptewr 5 Special Occupancies | 518.1 | Except for the assembly occupancies explicitly covered by 520.1, this article covers all buildings or portions of buildings or structures designed or intended for the gathering together of 100 or more persons for such purposes as deliberation, worship, entertainment, eating, drinking, amusement, awaiting transportation... | https://2023.antflix.net#518.1 |
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