gridsolar
Member
- Location
- California
- Occupation
- Solar Designer
I noticed that spec sheet for the Enphase IQ Combiner 4/4C lists #10-2/0 AWG for wire size range on the main lug combined output. What if my system is only 1 branch on a 20A breaker and I'm wiring #12 on the wire input. Can I put a #12 on the main lug output as well? In theory, only up to 20A would be outputted anyways, so wiring a #12 on the output seems fine to me. I'm wondering why the spec sheet has it start at #10 when they allow up to #14 on the input side, considering the system is only 1 branch with max circuit current < 20A.