timesinks
Well-Known Member
If the main panel isn't in the garage, I'd feed a beefy subpanel (maybe 150A so you can have the EVSEs but also garage circuits, etc.). Then I'd get 1" conduit in the walls to a 4-square for each bay. I'd bring dedicated circuits of 6AWG wire to both boxes. If I didn't have a hardwire charger, I'd put a receptacle in the box (50A breaker) -- otherwise, it's just a splice box for a hardwire install (breaker sized per the manufacturer's instructions).
The 1" conduit makes it an easy job to upsize the wire or pull a neutral down the line without opening up the walls.
I don't know if driveway parking is a thing where you live, but when we installed EVSEs on posts on either side of ours, boring 21 feet across was a huge PITA. If that's something that you might want, bringing 1" conduit from the house panel to a post on one side of the driveway then more 1" conduit from that post to one on the other side of the driveway would be cheap and easy (before the driveway is poured) and would unlock outdoor charging options too (or could be repurposed for RV pedestals or who knows). So think about your outdoor/landscape infrastructure too.
The 1" conduit makes it an easy job to upsize the wire or pull a neutral down the line without opening up the walls.
I don't know if driveway parking is a thing where you live, but when we installed EVSEs on posts on either side of ours, boring 21 feet across was a huge PITA. If that's something that you might want, bringing 1" conduit from the house panel to a post on one side of the driveway then more 1" conduit from that post to one on the other side of the driveway would be cheap and easy (before the driveway is poured) and would unlock outdoor charging options too (or could be repurposed for RV pedestals or who knows). So think about your outdoor/landscape infrastructure too.
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