I'm installing a sub-panel in my garage (single-family residence, attached garage) to supply typical shop loads (air compressor, welder, etc.) I have a 125A panel (with main breaker), selected primarily for the number of circuits, not load (maximum typical load would be about 70A, discontinuous). This panel will be fed from the load side of my existing service entrance disconnect (150A breaker). First of all, is this ?piggy-backing? the sub-panel feeder onto the existing service disconnect OK (which is why I selected the main breaker instead of main lug configuration for the new panel)? Secondly, what size conductor do I need for the sub-panel feeder? Can I drop down to the #2 aluminum SE with the 125A panel (does the 125% rule apply here or only to motor circuits)? If not, my options seem to be larger wire (1/0, since no one locally stocks a #1) or decrease the sub-panel main breaker to 100A?
Code requirements for sub-panel
- Thread starter sbmunds
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bthielen
Guest
Re: Code requirements for sub-panel
While it is good that you are asking these questions before you actually do the job, it is equally important that you understand that for reasons of professional courtesy and liability, this forum is not intended to be a source for "how-to" information.
Based on the nature of your questions and in the interest of personal safety it would be in your best interest to secure the help of a local licensed professional electrician.
While it is good that you are asking these questions before you actually do the job, it is equally important that you understand that for reasons of professional courtesy and liability, this forum is not intended to be a source for "how-to" information.
Based on the nature of your questions and in the interest of personal safety it would be in your best interest to secure the help of a local licensed professional electrician.
bonding jumper
Senior Member
Re: Code requirements for sub-panel
Moderator's Note:
Edited to remove information and instructions. This person is not entitled to this assistance, and this forum will not provide it.
[ September 02, 2004, 02:59 PM: Message edited by: charlie b ]
Moderator's Note:
Edited to remove information and instructions. This person is not entitled to this assistance, and this forum will not provide it.
[ September 02, 2004, 02:59 PM: Message edited by: charlie b ]
- Location
- Lockport, IL
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- Semi-Retired Electrical Engineer
Re: Code requirements for sub-panel
I agree with the advice given by bthielen, and am accordingly closing this thread.
I agree with the advice given by bthielen, and am accordingly closing this thread.
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