Wall Oven Question

Old 08-18-18, 06:45 PM
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Wall Oven Question

Iím a little confused...

i did the rough in electrical work for work for my new house prior to picking out any appliances. We planned on doing a wall oven so researched and it seemed like they were either 30 amp or 40 amp (depending on single or double) so I went ahead and ran an 8/3.

Received the wall oven this weekend and on the serial plate says 3.7kw @ 240. Manual that came with wall oven said look at serial plate and gave a table....table recommended 20 amp circuit for anything less than 4800.

Does this seem right? I know the wattage matches up but was fully expecting to put in a 30 amp two pole. Just wanted to make sure before I head to Menards to swap my 2 pole 30 for a 2 pole 20.

Any issues with throwing a 20 amp breaker on the 8/3 line?
Old 08-19-18, 04:41 AM
Tolyn Ironhand's Avatar
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If it is only a recommendation of the circuit size in the manual then I would just use the 30 amp breaker. You are protecting the wire, not the oven.

If the manual said you must use a 20 amp breaker, then you would have to follow their requirement.
Old 08-19-18, 01:05 PM
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I'd recommend using a 2P20A breaker for that oven. A 20A breaker on 30A wire is ok.

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