john sarica
New member
Where does it state the minimum allowable ampacity to be installed for branch circuits in a commercial building?
Minimum branch circuit ampacity commercial buildings
- Thread starter john sarica
- Start date
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mcclary's electrical
Senior Member
- Location
- VA
It doesn't but it's hard to meet the 3% voltage drop requirement with 14 guage,,,,so I run at least twelve for everything small,,,,,,and then of course size accordingly for the rest of the bigger loads. I never run 14 in commercial. Copying machines,,,,,things like that won't run on a 15 amp circuit
- Location
- Massachusetts
What requiment is that and where can I find it?
dana1028
Senior Member
- Location
- San Francisco Bay area
?? I know some copy machine mfr's require a 20A dedicated circuit; however that is 'some', not all.
There are many smaller copy machines that have a smaller draw and will work just fine on a 15A circuit.
That said, I've never installed a 15A ckt in a commercial application.
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
I've used 15a circuits in non-residential work when it was appropriate.
- Location
- Massachusetts
You know where it is.................now if it can enforced ~ that's another story
Yeah I know where it is but it is not a 'requirement' baring local rules or specifications. :smile:
- Location
- Massachusetts
Yes me too, we run a lot of 14 AWG for control circuits.
I have also been noticing that many of the Supermarket cases I work with actually specify 15 amp circuits .............. of course per the engineered plans each receives 20 amp circuits 'cause it's commercial'
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