2.1.4.1
Conductor Sizes
Conductor size shall conform to American Wire Gauge (AWG) and NFPA 70for
minimum size. Conductor sizes larger than No. 8 AWG shall be stranded. No.
8 AWG and smaller may be solid or stranded unless otherwise indicated.
2.1.4.2
Low Voltage Wire and Cable
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NOTE: Type THW insulation can only be obtained in
large quantity. Use of this type insulation is not
recommended for small projects. Wire with "W" in
the type is usually acceptable for wet locations.
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Use [UL 854, Type USE, 600 volts for underground low voltage power cables.]
Use [UL 83, Type [_____] [THW] [THWN]] [UL 44, Type [XHHW] [_____]] for
secondary series lighting circuits to be installed in pavement.
2.1.4.3
Power Cables for Use in Helipad Lighting
Power cables for use in Helipad Lighting shall be [rated [5] [_____] kV,]
[133 percent] [_____] insulation level, with shield and jacket provided as
specified in Section 16375A, ELECTRICAL DISTRIBUTION SYSTEM, UNDERGROUND.
2.1.4.4
Wire and Cable for Helipad Lighting Systems
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NOTE: FAA AC 150/5345-7 covers Type A (rubber),
Type B (ethylene-propylene), and Type C (crosslinked
polyethylene) cable. Each type has 600-volt and
5000-volt ratings with single and multiple
conductors. Type A and B have overall jackets while
C only has the overall jacket for the multiple
conductor cables. Type C is recommended for single
conductor cable. If soil conditions require a
jacketed cable for protection of insulation, specify
Type B.
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a.
Helipad lighting cable shall be [FAA AC 150/5345-7, Type L-824,
for crosslinked polyethylene Type C] [_____] [600] [5000]-volt
cable. Series airfield lighting cable shall be unshielded.
Lighting cable for multiple type lighting circuits shall be
[shielded] [unshielded].
b.
Cable for pavement slot installation shall be [UL 83 Type [THWN]
[THW]] [UL 44 Type XHHW], except as indicated otherwise.
c.
Counterpoise Wire. No. [4] [_____] AWG bare stranded copper,
annealed or soft drawn.
d.
Control Cable. [Multiconductor type for 120 V ac control, rated
600 volts, No. 12 AWG, and conforming to the following unless
indicated otherwise. Conductors shall be color coded. The cable
shall have an overall jacket of [heavy-duty neoprene] [_____]
rated for direct burial. Cable shall conform to FAA AC 150/5345-7,
Type [A] [B] [or] [C]]. [For 48 V dc control, multiconductor, 300
volts No. 19 AWG, conforming to RUS Bull 345-67] [_____].
SECTION 16525A
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