Panel main breaker

[laketime]

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?

 

[480sparky]

225.33, 225.34.

 

[raider1]

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]

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.

 

[laketime]

Is it required by code to drive another ground rod at the sub panel location?

 

[mcclary's electrical]

Is it required by code to drive another ground rod at the sub panel location?

yes, it's more than two circuits. If less than two then no

 

[RICK NAPIER]

If rods are your only electrodes besides water you need two.

 

[laketime]

What code section is that?

 

[charlie b]

What code section is that?

If you are asking about post # 6, the answer is 250.32(A) and its exception. If you are asking about post #7, the answer is 250.56.

 

[laketime]

Thanks Charlie, my code book skills seems to be severely lacking.

 

[augie47]

Thanks Charlie, my code book skills seems to be severely lacking.

most of us suffer the same malady

 

[infinity]

We're all assuming that this garage is detached? I didn't see that in the OP.

 

[laketime]

It is detached.

 

[jxofaltrds]

Does the new garage have a CEE?

 

[don_resqcapt19]

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.

 

[220/221]

We're all assuming that this garage is detached?

Not me.


I was going to ask.

 

[laketime]

What is a CEE?

 

[mcclary's electrical]

What is a CEE?

concrete encased electrode

 

[mcclary's electrical]

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.

Thanks Don. That makes it perfectly clear

 

[laketime]

It does not have a CEE