Installation and Operation Guide SOLECTRIA XGI 1500 (Rev A, April 2019)
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Figure 3-19 PV Output Circuit Wiring Harness Assembly
1. Confirm that the DC Switch and AC switch on the XGI 1500 are in the OFF position, and all fuse holders in
the Combiner are in the OPEN position, with fuses removed.
2. Feed the conductors of the Wiring Harness Assembly through the openings in the Combiner and XGI 1500
wiring compartment, and position the conduit up against the bottoms of the enclosures. A slight adjustment
of the position of the Combiner may be necessary to align the conduit perfectly.
3. From inside the enclosure, feed the conductors through the mating threaded fitting, then thread the fitting
into the conduit coupling to secure the conduit assembly in place, in both enclosures.
4. Proceed to terminate the PV Output Circuit conductors to the lugs, noting carefully the polarity markings on
the terminations and insulation color coding: Red = POSITIVE, Black = NEGATIVE.
5. For terminations in the inverter wiring section, torque the positive and negative terminals to 220 in-lbs (25
N-m) and the ground terminal to 90 in-lbs (10.2 N-m)
6. For terminations in the combiner box, torque the positive and negative terminals to 90 in-lbs (10.2 N-m)
and the ground terminal to 50 in-lbs (5.7 N-m)
7. Replace the plastic shield in the XGI 1500 wiring compartment. Completed wiring should appear as in
Figure 3-18.
Crimp lugs for terminations on posts in Combiner
and XGI wiring compartment.
(2) 4/0 AWG, RHW-2 2000V 90°C Cu
GND #4 AWG, RHW-2 2000V 90°C Cu
Red = positive, black = negative
1.5 inch LFNC with 90-degree elbows and
threaded couplings
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