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Table 5
Wire gauge requirements with two 30 A feeds (five wires)
Length
0 to 3 m (10 ft)
3 to 6 m (20 ft)
6 to 9 m (30 ft)
9 to 12 m (40 ft)
12 to 15 m (50 ft)
15 to 18 m (60 ft)
18 to 21 m (70 ft)
21 to 24 m (80 ft)
24 to 27 m (90 ft)
27 t o 30 m
(100 ft)
30 to 60 m
(200 ft)
over 60 m (200 ft)
Note 1: Two 30 A feeds are typically adequate for a column with four modules (five wires
total—two 30 A feed pairs plus logic return).
Note 2: If dual conduit is used, the wires must be run in battery/battery return pairs, with one
pair in one conduit and the other pair, plus logic return, in the other conduit.
Legend:
Yes = Wire size is adequate for the distance.
No = Wire size has too high a voltage drop and is inadequate for the distance.
NN43021-310
Standard 06.01
Installing DC power
A maximum loop drop of 2 V is allowed between the pedestal, or junction
box, and the external power equipment. See Table 5 for allowable wire sizes.
For more information about calculating wire size, see Communication
Server 1000M and Meridian 1 Large System Planning and Engineering
(NN43021-220).
#8 AWG
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
March 2013
#6 AWG
Single #4 AWG
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Double #4 AWG
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
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