Air Conditioning

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tacomafc

tacomafc

Senior Member
Location
Long Island New York
Could you please let me know if i'm reading the exception correctly in the code book. I have to feed a air condensor unit. The name plate on the unit says
min. cir ampacity (28 amps) and the max. over current protection is (50 amps).
Sounds CRAZY but I think I could use a 10 awg wire and a 50 amp circuit breaker.
 
tacomafc said:
Could you please let me know if i'm reading the exception correctly in the code book. I have to feed a air condensor unit. The name plate on the unit says
min. cir ampacity (28 amps) and the max. over current protection is (50 amps).
Sounds CRAZY but I think I could use a 10 awg wire and a 50 amp circuit breaker.
Click to expand...

You are correct, but why do you think it sounds crazy? The AC unit provides the overload protection.
 
tacomafc said:
Could you please let me know if i'm reading the exception correctly in the code book. I have to feed a air condensor unit. The name plate on the unit says
min. cir ampacity (28 amps) and the max. over current protection is (50 amps).
Sounds CRAZY but I think I could use a 10 awg wire and a 50 amp circuit breaker.
Click to expand...

You would be surprised how many EC do not or will not permit their employees to do this. They believe that a 50 amp breaker needs #6 or whatever. You can run that size wire if you want but it is not necessary. It is pretty normal to allow 175% on the OCP and more if necessary up to 250% I believe.
 
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