Plug wired to compressor

[wyliesdiesels]

The panel should have a minimum of 30A (Sparkies, check me here) breaker for the compressor.

30a breaker will probably hold but could also nuissance rip

since it will be hardwired, breaker can be max 2.5x of FLC, 70a for 5HP

 

[sparky 1971]

It would not surprise me if the electrician the OP hires to fix this has an additional "small job" charge (whether outright stated or just in the price).

Most contractors are going to have a minimum, usually two hours; I have a one hour minimum, but if it's an hour or less there is a $50 trip charge. The problem is getting something like this worked into the schedule.

 

[Cruzan80]

30a breaker will probably hold but could also nuissance rip

I was simply basing it off the Quincy 325 I have, with a Baldor 5HP that is also a few feet away from the compressor. I haven't had an issue with a 30A breaker on mine, but couldn't remember if it had to upsize due to being a motor to meet code.