circuit conversion

what gage (size) is the wire?

Probably bigger wires. If you have to ask, then you are not qualified to do this work in a commercial building. I highly recommend that you hire a qualified electrician.

Ben Miller

Your question reveals a naivety that indicates you are in over your head. That is, what you want is readily achievable but should not be a do-it-yourself job until you learn much more. Pay a licensed electrical contractor to do it for you. That will greatly reduce the possibility of you earning a Darwin award.

Bill

-- Fermez le Bush--about two years to go.

cptkirkh:

The circuit breaker protects the current-carrying capacity of the wire, not only the outlet.

You can't simply increase the breaker and expect to pump more current through wires that were originally sized for 15 amps -- this is dangerous. Potentially fire-and-injury dangerous.

The existing wire must be replaced with larger wire capable of handling 30 amps. Then replacing the breaker and outlet with appropriately-sized ones will complete the project.

It's also critical to properly ground the circuit.

Might be over your head. If you have any doubts, hire a pro to do it for you.

Good luck, Sparky

That assumes the installed wire is not capable of 30 amps, which seems likely.

And, in a commercial building the wire is likely in conduit, so you would also have to keep an eye on conduit fill issues.

I concur here.

Bill Ranck Blacksburg, Va.