this post was submitted on 25 Feb 2026
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Electricians
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I think this is it, I would gather that those two smaller open copper connections are heading off to subpanels. I would suggest if you really have to know get an ok multimeter and test the ground to each of the prongs (inlets) separately, then if anything is on the neutral to ground that is a massive issue, or if there isnt 110V(+/-10%) from live to ground or not the same from live to both, that is a harder issue. But that as a home owner (who wants to be informed) is as far as I would suggest. (if you feel comfortable with a multi meter, but also be aware you should have your hot leg on your smaller prong entrance, but if shits fucked [even if not] you NEVER trust this thing is wired correctly)