Electrical – feed a sub panel off the 200A service box? Or would I need to run wire from the inside breaker box

240vcircuit breakerelectricalelectrical-panelsubpanel

enter image description hereenter image description hereenter image description hereCan I add a sub panel feed off my 200A service box? If so what are the requirements?

Or would I need to run it from the main house breaker inside the house and wire from there?
I currently have a 125amp? subpanel right next to my service box on the side of my house. But it is wired not into the lugs, but into a 50 amp breaker that says "backfeed do not touch" for that breaker..

This subpanel is for an inground pool and I was going to add a heat pump to it.

Want it to be safe, but not spend a fortune or alot of work.

Best Answer

I don't think that's a 125 amp wire. My bet is that's an 8 gauge wire feeding that whole panel, so 50 amps per leg. I wouldn't bank on it being more than that.

Whether or not you can add more is another question. You've got a 20 amp 240v breaker and a 20 amp 120v breaker. You could add another 20A to the one leg with only 20A (the unused slot below the single 20A) and be OK. You just can't exceed 50A on any given leg.