Breaker box ain't got no holes!?

jack · 2008-07-09T21:58:21+00:00

I am installing a 120v water heater in a 208/120 breaker box. Oddly, there are no knockouts. Is that common in 208/120v?I see three options; your advice on their legality would be appreciated.1) I can cut a hole with a hole saw. Not a pleasant chore, but possible.2) There is an outlet in a box just below the breaker box, connected to it by a 1/2" conduit. I could connect my MC cable to the outlet box and run the wires into the breaker box by the 1/2" conduit. I presume 1/2" conduit can take two sets of #12 cable.3) I can run my circuit to the outlet box and attach it to the wires that feed the outlet. The outlet is only used for a radio and the water heater is only 13a, so there should be plenty of capacity.

Jul 09, 2008 20 Replies

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Stormin Mormon 18 years ago

Last time I needed a romex connector hole, I did it with a Unibit step drill. It's bigger than 3/4, so I had to buy the $30 bit. Paid for itself that day.

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