- Location
- New Jersey
- Occupation
- Journeyman Electrician
I have an afci circuit that will be backed by a standby generator which will not provide AFCI protection, is it required?
Optional Standby Generator and AFCI Protection
- Thread starter infinity
- Start date
- Status
- Location
- Lockport, IL
- Occupation
- Semi-Retired Electrical Engineer
Presuming this is a dwelling unit or a dormatory, then I would say yes. 210.12 talks about the circuit having the protection, without mentioning the source of energy.
ceb58
Senior Member
- Location
- Raeford, NC
Why would it not be AFCI'ed protected? If there is a ATS with the built in circuit breakers there is nothing preventing the replacement of a regular breaker with a AFCI type.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
This is for an apartment building with an optional standby generator to provide heat through a 208 volt fan coil unit, a receptacle, and one lighting outlet. The backup power is provided by a branch circuit panel fed from the generator. The current design has no AFCI protection for the circuits originating at the generator panels. This is under the 2008 and only the receptacle/lighting circuit has normal AFCI protection.
ceb58
Senior Member
- Location
- Raeford, NC
Why can the breaker not be changed to an AFCI if this circuit falls under 210.12(B) 2008?
Exactly what is done here often.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
I'm saying that it's required and that would be an option but the designer has a different opinion. :roll:
ceb58
Senior Member
- Location
- Raeford, NC
Now its clear as mud. I am with Charlie I see nothing that specifies power source. As said, if the circuit fall under 210.12(B) then it is what it is, the designer can have an opinion but the NEC has it in black and white.
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