My guess is that the cable entry plate we use on our solar prep, have the MC4s on it with a pre-wired pigtail that we splice into our run, in the ceiling just below the cable entry port. It's there at that in-ceiling splice where the wire size transition is made. This is my guess.I just went up on the roof and indeed they are 10 gauge into the connectors.Why then would there be 8 gauge pigtails in the front storage?It’s no big deal as these will be routed to the disconnect breaker anyway. Thanks!