wire size

[rayman506]

when calculating wire size for an resisdential air compressor for a air condition do you go by the minimun ampacity or min/max overcurrent on the label?

 

[iwire]

The NEC allows us to size the conductors by the MCA and at the same time size the over-current protection at the maximum over-current protection rating.

The motors overloads protect the conductors from overload.

 

[Keri_WW]

MCA for the wire size. MOCP for the breaker size. FLA for the load.

 

[rayman506]

MCA for the wire size. MOCP for the breaker size. FLA for the load.

would not nec 440 .12 (A)(1) at 115% of the nameplate appy

 

[raider1]

would not nec 440 .12 (A)(1) at 115% of the nameplate appy

440.12 is the rating of the disconnecting means and does not apply to the branch circuit conductors.

Chris