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minimum OCPD for wall oven #198802 02/04/11 09:50 PM
Joined: Aug 2006
Posts: 356
Niko Offline OP
Member
Here is the info given in the installation instruction from the oven manufacturer.

7200W, 240V dedicated 30Amp circuit

I know the minimum is 30A OCPD with # minimum #10 conductors.

Now for the maximum i figured 40Amps OCPD according to 422.11(E)(3)
30 x 150% = 37.5Amps

Am i correct on this?


Be kind to your neighbor, he knows where you live

2017 / 2014 NEC & Related Books and Study Guides
Re: minimum OCPD for wall oven [Re: Niko] #198810 02/04/11 11:03 PM
Joined: Apr 2002
Posts: 7,233
HotLine1 Online Content
Member
Niko:
30 x 150% equates to 45 . 37.5 would equate to 125% of 30.

Math aside, some may interpert the nameplate as "30 amp max", as I read it....dedicated 30 amp circuit.







John
Re: minimum OCPD for wall oven [Re: Niko] #198818 02/05/11 04:34 AM
Joined: Aug 2006
Posts: 356
Niko Offline OP
Member
But if one doesn't interpret the name plate as the MAX, then one can use 30 x 150% and install a maximum 45A OCPD?

Thanks



Be kind to your neighbor, he knows where you live

Re: minimum OCPD for wall oven [Re: Niko] #198821 02/05/11 10:31 AM
Joined: Jul 2002
Posts: 241
S
SJT Offline
Member
Niko,
If I had to run a circuit to the oven, I would run #8's. If the oven draws 30 amps on full (Thanksgiving Dinner) then your wire size needs to be 8's onto a 40 amp Breaker. (4 wire)
Good Day


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