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Installation instructions – Outback Power Systems PV Ground-Fault Detector Interrupter (GFDI) Installation User Manual

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5

Installation Instructions

• Insert the GFDI into the breaker mounting bracket.
• Insert and hand-tighten the GFDI’s mounting screws.
• CAUTION — overtightening can damage the GFDI.
• With all system power off, attach the ground and negative wires to

their respective bus bars and to the back of the GFDI.

• The ground wire goes to the top of the 0.5 amp breaker.
• The negative wire goes to the bottom of the same breaker.
(See Figures 1 and 2.)

• With all system power off, make the connections to the individual

80-amp breakers. The specifics will vary with the GFDI model and
installation type.

• Attach the “Battery +” wire from one charge controller to the top of

one 80-amp breaker. (See Figure 2.)

• Attach a wire from your battery positive breaker or battery positive

bus bar to the bottom of the same 80-amp breaker. (See Figure 2.)

• Repeat these steps for additional charge controllers. The GFDI

should have one 80-amp breaker for each controller.

• Torque all GFDI wires to 35 inch-pounds/4.0 Nm.

Figure 1. Placement of

Ground and Negative Wires

GFDI
0.5 Amp
Breaker