tjhelectric
Member
main breaker or not?
[ September 16, 2004, 05:29 PM: Message edited by: tjhelectric ]
[ September 16, 2004, 05:29 PM: Message edited by: tjhelectric ]
sub panels
- Thread starter tjhelectric
- Start date
- Status
- Location
- Massachusetts
Re: sub panels
If the sub panel is in the same building as the service panel that feeds it there is no requirement to have a main in a sub panel. This assumes the feeder has a rating the same or less than the sub panel.
If the sub panel is in a separate structure there is still no requirement for a main breaker again assuming the feeder has a rating the same or less than the sub panel.
However there is a requirement for a disconnecting means in a separate structure. Often the easiest way to comply with this is a main breaker panel.
Bob
[ September 16, 2004, 05:35 PM: Message edited by: iwire ]
If the sub panel is in the same building as the service panel that feeds it there is no requirement to have a main in a sub panel. This assumes the feeder has a rating the same or less than the sub panel.
If the sub panel is in a separate structure there is still no requirement for a main breaker again assuming the feeder has a rating the same or less than the sub panel.
However there is a requirement for a disconnecting means in a separate structure. Often the easiest way to comply with this is a main breaker panel.
Bob
[ September 16, 2004, 05:35 PM: Message edited by: iwire ]
ryan_618
Senior Member
- Location
- Salt Lake City, Utah
Re: sub panels
What is a subpanel?
Is it fed from a transformer?
What is a subpanel?
Is it fed from a transformer?
- Location
- Massachusetts
Re: sub panels
Still no requirement to use a main breaker panel.
Would it make a difference?
Still no requirement to use a main breaker panel.
ryan_618
Senior Member
- Location
- Salt Lake City, Utah
Re: sub panels
Sometimes there is...Originally posted by iwire:
Would it make a difference?
Still no requirement to use a main breaker panel.
- Location
- Lockport, IL
- Occupation
- Semi-Retired Electrical Engineer
Re: sub panels
</font>
I don?t understand the question.
</font>
- <font size="2" face="Verdana, Helvetica, sans-serif">Are you asking if a main breaker is required under any specific circumstances?</font>
- <font size="2" face="Verdana, Helvetica, sans-serif">Are you asking if a main breaker is preferred (i.e., design choice) under any specific circumstances?</font>
- <font size="2" face="Verdana, Helvetica, sans-serif">Are you asking if any of us have good reason for using, or not using a main breaker under any specific circumstances?</font>
- <font size="2" face="Verdana, Helvetica, sans-serif">Are you asking for the code section that discusses main breakers?</font>
- <font size="2" face="Verdana, Helvetica, sans-serif">Are you asking if any of us have a main breaker for sale? </font>
- Location
- Massachusetts
Re: sub panels
I would say no.
Is there?Originally posted by ryan_618:
Sometimes there is...Originally posted by iwire:
Would it make a difference?
Still no requirement to use a main breaker panel.
I would say no.
- Location
- Massachusetts
Re: sub panels
It may be the easiest way to meet certain code requirements but that is a design issue as they say.
No way, not meOriginally posted by eprice:
ok iwire,
I get the feeling you're just trying to stir the pot here
It may be the easiest way to meet certain code requirements but that is a design issue as they say.
Re: sub panels
Well, in case tjhelectric doesn't reply, I'll ask.
Are you asking if a main breaker is required under any specific circumstances? Yes
Are you asking if a main breaker is preferred (i.e., design choice) under any specific circumstances? Yes
Are you asking if any of us have good reason for using, or not using a main breaker under any specific circumstances? Yes
Are you asking for the code section that discusses main breakers? Yes
Are you asking if any of us have a main breaker for sale? What you got?
Brentp
Well, in case tjhelectric doesn't reply, I'll ask.
Are you asking if a main breaker is required under any specific circumstances? Yes
Are you asking if a main breaker is preferred (i.e., design choice) under any specific circumstances? Yes
Are you asking if any of us have good reason for using, or not using a main breaker under any specific circumstances? Yes
Are you asking for the code section that discusses main breakers? Yes
Are you asking if any of us have a main breaker for sale? What you got?
Brentp
Re: sub panels
Originally posted by iwire:
I do not believe that there is a single instance in the NEC that requires us to use a main breaker panel.
It may be the easiest way to meet certain code requirements but that is a design issue as they say.
sandsnow
Senior Member
- Location
- Southern California
Re: sub panels
Originally posted by iwire:
It may be the easiest way to meet certain code requirements but that is a design issue as they say.
You had me thinking you were mistaken for a while.
hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
Re: sub panels
Larry:
Larry:
Don't you dare I'll never be able to pass his test
sandsnow
Senior Member
- Location
- Southern California
Re: sub panels
I'm gonna throw this out at the next inspector meeting and see how many I catch
I'm gonna throw this out at the next inspector meeting and see how many I catch
A
a.wayne3@verizon.net
Guest
Re: sub panels
Trolling for inspectors what an idea
Trolling for inspectors
what an idea- Status