Coppersmith
Senior Member
- Location
- Tampa, FL, USA
- Occupation
- Electrical Contractor
(For a residential AC system) I got a call from an AC contractor I work with and I want to confirm the answer I gave him. He said an inspector was insisting that the breaker size has to match the "maximum fuse or circuit breaker" on the nameplate. I said It could be smaller matching the wire size for the "minimum circuit ampacity" (so 30 amp breaker for #10 wires). I tried to find this info in the NEC. Seems like it should be in 440, but I can't find anything related to circuit breaker sizing. Please tell me if I am correct and tell me where I can find this in the NEC so we can show the inspector. Thanks.