Table 1, Recommended Dc Wire/Overcurrent Device; Table 2, Dc Wire Size For Increased Distance - Magnum Energy MM Series Installation And Operation Manual

2.0 Installation
Note: The DC wires must be color coded with colored tape or
heat shrink tubing: RED for positive (+); BLACK for negative
(-); and GREEN for DC ground.
The DC wires must have soldered and crimped lugs, crimped copper
compression lugs, or aluminum mechanical lugs. Soldered connections
alone are not acceptable for this application.

Table 1, Recommended DC Wire/Overcurrent Device

Full Load DC
Input Current
Maximum DC
Input Current
Minimum
Wire Size
Maximum DC
Overcurrent Device*
DC Ground
Wire Size
*Based on NEC, NFPA 70, Table 310-17, for 75° C single-insulated
If the inverter is expected to operate at a distance greater than three
feet from the battery bank, the DC wire will need to be increased to
overcome the increase in resistance which affects the performance of
the inverter. Continue to use the overcurrent device and DC ground
wire previously determined from Table 1 and then refer to Table 2 to
determine the minimum DC wire size you need for various distances
based on your inverter model.

Table 2, DC Wire Size For Increased Distance

3 ft or less
MM612
MM1212
12
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Inverter Model
MM612
60 amps
125 amps
# 4 AWG
125 amps
# 6 AWG
cables in free air
Minimum recommended DC wire size (one way)
3 to 5 ft
#4 AWG #2 AWG
# 1 AWG #1/0 AWG
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MM1212
125 amps
175 amps
# 1 AWG
200 amps
# 6 AWG
5 to 10 ft 10 to 15 ft
#1/0 AWG #2/0 AWG
not
#2/0 AWG
recommended
©2006 Magnum Energy Inc.