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Author Topic: Circuit breaker question  (Read 911 times)

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Offline CramboneTopic starter

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Circuit breaker question
« on: June 24, 2023, 12:43:58 am »
If I have a 240 vac 40 amp load can I protect it with a single pole 40 amp breaker on one leg of the 240 vac?
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Online Monkeh

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Re: Circuit breaker question
« Reply #1 on: June 24, 2023, 12:49:50 am »
Ponder the outcome of a ground fault on the unfused leg. And then hire an electrician..
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Offline helius

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Re: Circuit breaker question
« Reply #2 on: June 24, 2023, 01:54:45 am »
If using the common 120-0-120 North American split-phase power, you must use ganged two-pole circuit breakers on 240V circuits.
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Offline WattsThat

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Re: Circuit breaker question
« Reply #3 on: June 24, 2023, 04:56:55 am »
No. You need a two pole ganged breaker as mentioned and #8 awg wire. If you use 8/2 with ground, mark the white lead with black tape on both ends.

Ovens/Ranges/Dryers now require a GFCI breaker.
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Offline JustMeHere

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Re: Circuit breaker question
« Reply #4 on: June 24, 2023, 05:25:28 am »
You have to have two adjacent slots free to get 240 out of an American panel.
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