Panel main breaker

Merry Christmas
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laketime

Senior Member
I have a 50 amp feed of a panel (fed from a breaker) going to a new garage. Does the sub panel need to have a main breaker? Where do I find that in the code?
 

raider1

Senior Member
Staff member
Location
Logan, Utah
I agree with 480sparky,

The feeder to the garage must have a disconnecting means installed at the garage in accordance with 225.31 and located in accordance with 225.32.

225.33 gives you the allowance for up to 6 circuit breakers to constitute as the disconnecting means.

Chris
 

charlie b

Moderator
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Location
Seattle, WA
Occupation
Electrical Engineer
Although I agree with the previous two posts, neither of them specifically answers the specific question. ;)

The answer is "no, the sub panel does not need to have a main breaker." You can put an unfused disconnect switch outside the garage, and have as large a panel as you want inside the garage, and not use a main breaker in that panel. That said, the simplest way to satisfy the requirement for a disconnecting means is to put a main breaker in the garage sub panel.
 

don_resqcapt19

Moderator
Staff member
Location
Illinois
Occupation
retired electrician
yes, it's more than two circuits. If less than two then no
It is a single circuit, but that circuit is a feeder and the second building always requires a grounding electrode system when it is served by a feeder. A single branch circuit, two wire or multiwire, does not require a grounding electrode system.
 
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