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GFDI wiring

Posted: Wed Mar 06, 2019 5:33 pm
by raysun
I'm installing a dual GFDI in my Flexpower 1. After removing the single GFDI and inspecting it, the labeling is confusing me. (See photo.)

The 80A disconnect is labeled BAT + on the Load side of the breaker, and CC+ (INV+) on the Line side of the breaker.

The original 80A breaker in the GFDI assembly was wired with the Battery + connected to the terminal labeled Line and CC+ (INV +), and the Charge Controller + lead was wired to the terminal labeled Load BAT +.

Does the labeling and wiring make sense at all?

My confusion comes from thinking the Line side of these DC breakers should be connected to the highest amperage source (in this case the battery), but the labeling implies the opposite. Am I misinformed on that?

Re: GFDI wiring

Posted: Thu Mar 07, 2019 7:33 am
by Kurt Lundquist
Follow the labels. Battery connection on Batt terminal and PV connection on PV terminal. Power flows from CC (line) to Battery (load).

-Kurt

Re: GFDI wiring

Posted: Thu Mar 07, 2019 7:37 am
by raysun
OK, will do.

(A bit scary that it was miswired at the factory though.)