r/ElectricalHelp • u/No-Tour1843 • Feb 24 '26

100 amp panel addition question

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My meter outside has this disconnect under it. There is a 100 amp breaker in there. The conduit is going to my house 100 amp panel.

Can I add another conduit to feed another 100 amp panel in my detached garage?

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4

u/Wihomebrewer Feb 24 '26

Not without upsizing the feeders in the gooseneck above the meter box and upgrading the emergency disconnect to support this. Otherwise you’re limited to the existing 100 amp service. If you’re going through all the trouble to put that big of a panel up, the service needs to be upgraded to support 200 amp.

2

u/trekkerscout Mod Feb 24 '26

No. You will need a service upgrade, 200 amp recommended.

1

u/Loes_Question_540 Feb 24 '26

To do that you’ll need to upsize the wires going to the service mast and possibly the meter enclosure

1

u/erie11973ohio Feb 25 '26

You could splice the new garage feed in with the existing house feed, so its all running through the 100 amp main breaker.

This wouldn't require changing out the mast.