DC conductors (x4):
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2 positive and 2 negative conductors; 1 positive and 1 negative in each direction
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Copper only, minimum current carrying capacity 200 A
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DC cable run must be continuous, with no joints or splices
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Consult site drawings for site-specific conductor size and length
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Leave 61 cm (2 ft) of each conductor above grade at each end
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Voltage Rating
Temperature
Rating
Maximum Conductor Size
for Terminals
Insulation
Type
Phase conductors - 1000 V 90°C 300 kcmil, 1x per pole XHHW-2
Ground conductor- 1000 V 90°C 4/0 AWG XHHW-2
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DC lugs (x4):
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All lugs must be nickle, tin, or silver plated copper compression (not mechanical) lugs. Nickel
plated and used with dielectric grease is recommended.
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2-hole lugs, 1 in spacing, 3/8 in hole size, and 1.23 in max tongue width.
When DC conductors are pulled through conduit, label each end of each DC conductor to aid installation as
follows:
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“Station 1 A+” on one end and “Station 2 B1+” on the other end
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“Station 1 A-” on one end and “Station 2 B1-” on the other end
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“Station 1 B1+” on one end and “Station 2 A+” on the other end
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“Station 1 B1-” on one end and “Station 2 A-” on the other end
CAUTION: Be sure to connect positive to positive, and negative to negative, on the same wire. Do
not reverse the polarity.
24
Additional Wiring Requirements for Paired Stations
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