shall conform to requirements specified herein for cabinets. The flasher
frequency shall be between 1 and 5 Hz. The system pushbutton shall be
provided with a nameplate inscribed "PUSH TO SILENCE" and "TURN TO TEST."
2.10
CABINETS AND ENCLOSURES
Cabinets and enclosures shall comply with NEMA 250 and shall be of
galvanized steel, shall be provided with hinged doors, and shall be
suitable for indoor or outdoor installation as indicated. Where locations
are not indicated, cabinets shall be suitable for outdoor installation.
Thickness of metal and outdoor construction shall be in accordance with UL
50. An indoor cabinet exterior shall have one finish coat and an outdoor
cabinet exterior shall have two finish coats. Finish colors shall be
manufacturer's standard dark gray or sky gray for outdoor cabinets and
light gray for indoor cabinets, unless otherwise specified. The finish
color of outdoor equipment shall be the same unless otherwise approved.
Finish coats shall be applied over a prepared substrate. Each cabinet
shall be a freestanding type or may be supported by attachment to an
enclosure fence or a switchgear interior wall where located adjacent
thereto. A concrete pad shall be provided to support any outdoor cabinet
whose base extends to within 75 mm 3 inches of grade level and pads shall
extend at least 100 mm 4 inches below grade.
2.11
MISCELLANEOUS
2.11.1
Duplex Receptacles
Duplex receptacles shall be ivory in color and provided where shown.
Receptacles exposed to the weather shall be equipped with weatherproof
covers or installed in weatherproof box with a hinged door or cover.
Receptacles shall be of the ground fault circuit interrupter type, or the
receptacles and receptacle circuits shall be protected by a ground fault
circuit interrupter type of circuit breaker. Unless otherwise shown,
receptacles shall conform to the NEMA WD 1 configuration 5-15R rated at 125
volts, 15 amperes and shall be the two-pole, three-wire grounding type.
Wiring for outdoor receptacle circuits shall be not less than No. 12 AWG in
size and suitable for installation in wet locations.
2.11.2
Low-Voltage Power Circuit Breakers
2.11.2.1
Power Circuit Breakers
a.
Construction:
Low-voltage power circuit breakers shall conform to IEEE C37.13, ANSI C37.16,
and NEMA SG 6 and shall be three-pole, single-throw, stored energy,
[manually] [electrically] operated, with drawout mounting. Solid-state
trip elements which require no external power connections shall be
provided. Circuit breakers shall have an open/close contact position
indicator, charged/discharged stored energy indicator, primary disconnect
devices, and a mechanical interlock to prevent making or breaking contact
of the primary disconnects when the circuit breaker is closed. Control
voltage shall be [24 V dc] [48 V dc] [125 V dc] [120 V dc] [as indicated].
The circuit breaker enclosure shall be suitable for its intended location.
b.
Ratings:
Voltage-ratings shall be not less than the applicable circuit voltage.
Circuit breakers shall be rated for 100 percent continuous duty and shall
SECTION 16311A
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