Wire Gauge Requirements With Two 30-Amp Feeds (Five Wires) - Nortel Meridian 1 Manual

Table 2

Wire gauge requirements with two 30-amp feeds (five wires)

Length
0–3 m (10 ft)
3–6 m (20 ft)
6–9 m (30 ft)
9–12 m (40 ft)
12–15 m (50 ft)
15–18 m (60 ft)
18–21 m (70 ft)
21–24 m (80 ft)
24–27 m (90 ft)
27–30 m (100 ft)
30–60 m (200 ft)
over 60 m (200 ft)
Note 1: Two 30-amp feeds are typically adequate for a column with four modules (five wires total—two
30-amp 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.
A maximum loop drop of two volts is allowed between the pedestal, or
junction box, and the external power equipment. See Table 2 for allowable
wire sizes. See Meridian 1 power engineering (553-3001-152) for detailed
information on calculating wire size.
#8 AWG
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
Installing DC power
#6 AWG Single #4 AWG
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
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Double #4 AWG
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
System installation procedures
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No