Outback Power Systems GFX International Series Installation Manual - Manual (Page 21)

Installation
900-0111-01-00 Rev B 19
DC Wiring
CAUTION: Equipment Damage
Never reverse the polarity of the battery cables. Always ensure correct polarity.
CAUTION: Fire Hazard
Always install a circuit breaker or overcurrent device on each DC positive
conductor to protect the DC system.
Table 4 DC Conductor Size and Torque Requirements
Inverter Nominal DC Amps
(Derated 125%)
Conductor Size
(Minimum)
Breaker Size
(Minimum)
GFX1312E 130 70 mm2 (2/0 AWG) or 0.109 in2 175 Adc
GFX1424E 70 70 mm2 (1/0 AWG) or 0.109 in2 125 Adc
GFX1448E 35 50 mm2 (#1 AWG) or 0.078 in2 100 Adc
Terminal Location Torque Requirements
Inverter DC Terminals 4.0 Nm (35 in-lb)
Battery Terminals See battery manufacturer’s recommendations
When installing DC cables:
¾ Make certain DC circuit breakers are turned to the off position, or fuses are removed, before proceeding.
¾ Note sizes in Table 4, but refer to applicable codes for absolute cable size recommendations.
¾ Battery positive and negative cables should be no longer than 3 meters (10 feet) each, to minimize voltage
loss and other effects.
¾ Install all overcurrent devices on the positive cable.
¾ The cables listed above are for each inverter in a system. In a system with multiple inverters, each inverter
requires its own cables and overcurrent devices of the size indicated.
¾ The inverter’s battery terminal is a threaded stud which accepts a ring terminal lug. Use crimped and sealed
copper ring lugs with 0.79 cm (5/16 inch) holes, or use compression lugs.
¾ Tie, tape, or twist cables together to reduce self-inductance. Run positive and negative cables through the
same knockouts and conduit.
Figure 8 Battery Terminal Covers
If present, remove the battery
terminal covers. These are made of
stiff plastic with a snap-on design.
Remove carefully using a flat
screwdriver inserted into the slots
on the sides of each cover.