Distribution Equipment. Equipment for COPS feeder circuits (including transfer equipment, transformers, and panelboards) shall comply with (1) and (2).
(1) Be located in spaces with a 2-hour fire resistance rating
(2) Be located above the 100-year floodplain.
708.12 Feeders and Branch Circuits Supplied by
COPS. Feeders and branch circuits supplied by the COPS shall supply only equipment specified as required for critical operations use.
708.14 Wiring of HVAC, Fire Alarm, Security, Emer- gency Communications, and Signaling Systems. All conductors or cables shall be installed using any of the metal wiring methods permitted by 708.10(C)(1) and in addition shall comply with 708.14(1) through 708.14(8) as applicable.
(1) Signal and communication wires shall use shielded twisted pairs.
(2) Shields of signal and communication wires shall be continuous.
(3) Fiber optic cables shall be used for connections be- tween two or more buildings on the property and under single management.
(4) Listed secondary protectors shall be provided at the terminals of the communication circuits.
(5) Conductors for all control circuits rated above 50V
shall be installed with wire rated not less than
600V.
(6) Communications, fire alarm, and signaling circuits shall use relays with contact ratings that exceed circuit voltage and current ratings in the controlled circuit.
(7) Riser communication cables shall be 2-hour fire- resistive cable or a listed 2-hour electrical circuit protective system.
(8) Control, monitoring, and power wiring to HVAC sys- tems shall be 2-hour fire-resistive cable or a listed
2-hour electrical circuit protective system.
III. Power Sources and Connection
708.20 Sources of Power.
(A) General Requirements. Current supply shall be such that, in the event of failure of the normal supply to the DCOA, critical operations power shall be available within the time required for the application. The supply system for critical operations power, in addition to the normal services to the building and meeting the general requirements of this section, shall be one or more of the types of systems de scribed in
708.20(D) through (H).
FPN: Assignment of degree of reliability of the recognized critical operations power system depends on the careful evaluation in accordance with the risk assessment.
(B) Fire Protection. Where located within a building, equipment for sources of power as described in
708.20(D) through (H) shall be installed either in spaces fully protected by approved automatic fire suppression systems (sprinklers, carbon dioxide systems, and so forth) or in spaces with a 1-hour fire rating.
(C) Grounding. All sources of power shall be grounded as a separately derived source in accordance with
250.30.
Exception: Where the equipment containing the main bonding jumper or system bonding jumper for the normal source and the feeder wiring to the transfer equipment are installed in accordance with 708. J 0(C) and 708.11(B).