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Questions about supplying services like electrical or plumbing to other structures on your property such as detached garages, sheds, and the like.

3 votes

Wiring subpanel in detached garage

A 125A "main breaker" in the subpanel is fine. However, the breaker feeding this, which is in the main panel, must be 80A or 90A depending on the insulation of your wire. Actually, I'd recommend a "la …
Harper - Reinstate Monica's user avatar
3 votes
Accepted

Multiwire branch circuit means of disconnect

The "means of disconnect" requirement for multi-wire branch circuits (NEC 210.4b) simply requires that there be a means of disconnect, and it disconnect all legs at once. Usually, that is simply the …
Harper - Reinstate Monica's user avatar
1 vote

Adding sub panel - detached building

You will need a ground wire running back to the house. Since you have upsized the wire beyond bare minimum, a fudge factor gets applied to the required grounding wire size, so the required size is …
Harper - Reinstate Monica's user avatar
1 vote
Accepted

Bare neutral to subpanel in detached garage

The Power Company did that, didn't they? :) They gave us a very similar setup; thru lugs off the bottom of the main panel, back up the pole to another pole to another panel. They're installing that …
Harper - Reinstate Monica's user avatar
3 votes

Help choosing an outbuilding sub-panel

Lots and lots and lots of spaces. Electricity works for us. It does our bidding. Running out of spaces is a huge, project-killing problem. And spaces are dirt cheap when you buy it (rather more expe …
Harper - Reinstate Monica's user avatar
4 votes
Accepted

Appropriate installation for a detached structure electrical sub panel?

One circuit or feeder to an outbuilding If you install a 120/240V split-phase #6 feeder, you have to get rid of the #10 circuit. Then you would feed the well from the subpanel you plan. The only exce …
Harper - Reinstate Monica's user avatar
0 votes

Where do I attach the Ground and Neutral inside a sub-panel?

Oh no! Send that panel back. The dead giveaway is that they threw an accessory ground bar in the box for you. (and it's HOM, which is notoriously cheap, which means they wouldn't give you a ground sc …
Harper - Reinstate Monica's user avatar
2 votes

12/3 underground to garage multiple 14/2 wires to bare 12/3. No ground rod anywhere around 1...

#14 in 20A circuit #14 wire in the circuit will add a couple volts of voltage drop, but that isn't nearly enough to explain such dimming. Something else is wrong. You're always allowed to use bigger …
Harper - Reinstate Monica's user avatar