Re: [AFMUG] Circuit breaker clearance

[Jason Wilson]

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> On Mar 20, 2018, at 9:22 AM, Chuck McCown  wrote:
> 
> Thanks. Better than the 72” I was thinking. No idea where my NEC is...
> 
> Sent from my iPhone
> 
>> On Mar 16, 2018, at 10:14 PM, Seth Mattinen  wrote:
>> 
>>> On 3/15/18 12:03 PM, Chuck McCown wrote:
>>> I am installing a backup generator.  I know  you have to have 3 feet of 
>>> clearance between a circuit breaker panel front and anything else.
>>> Do I need 3 feet from the side of the generator where it’s disconnect 
>>> switch is and then another 3 feet to the transfer switch that will be 
>>> mounted on an H frame on that same side?  So 6 feet total?
>> 
>> 
>> Code is minimum 4' for up to 600V. Comfort is more.
>> 
>> 36" from exposed live parts on one side of the working space and the 
>> opposing face is non conductive or insulated
>> 
>> 42" if the other side of the working space is grounded (includes concrete, 
>> brick, and tile)
>> 
>> 48" if both sides can have exposed lived parts.

Re: [AFMUG] Circuit breaker clearance

[Chuck McCown]

Thanks. Better than the 72” I was thinking. No idea where my NEC is...

Sent from my iPhone

> On Mar 16, 2018, at 10:14 PM, Seth Mattinen  wrote:
> 
>> On 3/15/18 12:03 PM, Chuck McCown wrote:
>> I am installing a backup generator.  I know  you have to have 3 feet of 
>> clearance between a circuit breaker panel front and anything else.
>> Do I need 3 feet from the side of the generator where it’s disconnect switch 
>> is and then another 3 feet to the transfer switch that will be mounted on an 
>> H frame on that same side?  So 6 feet total?
> 
> 
> Code is minimum 4' for up to 600V. Comfort is more.
> 
> 36" from exposed live parts on one side of the working space and the opposing 
> face is non conductive or insulated
> 
> 42" if the other side of the working space is grounded (includes concrete, 
> brick, and tile)
> 
> 48" if both sides can have exposed lived parts.

Re: [AFMUG] Circuit breaker clearance

[Seth Mattinen]

On 3/15/18 12:03 PM, Chuck McCown wrote:
I am installing a backup generator.  I know  you have to have 3 feet of 
clearance between a circuit breaker panel front and anything else.
Do I need 3 feet from the side of the generator where it’s disconnect 
switch is and then another 3 feet to the transfer switch that will be 
mounted on an H frame on that same side?  So 6 feet total?



Code is minimum 4' for up to 600V. Comfort is more.

36" from exposed live parts on one side of the working space and the 
opposing face is non conductive or insulated


42" if the other side of the working space is grounded (includes 
concrete, brick, and tile)


48" if both sides can have exposed lived parts.

[AFMUG] Circuit breaker clearance

[Chuck McCown]

I am installing a backup generator.  I know  you have to have 3 feet of 
clearance between a circuit breaker panel front and anything else.
Do I need 3 feet from the side of the generator where it’s disconnect switch is 
and then another 3 feet to the transfer switch that will be mounted on an H 
frame on that same side?  So 6 feet total?