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#198802 - 02/04/11 06:50 PM minimum OCPD for wall oven
Niko Offline
Member

Registered: 08/17/06
Posts: 358
Loc: Campbell, CA
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?
_________________________
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#198810 - 02/04/11 08:03 PM Re: minimum OCPD for wall oven [Re: Niko]
HotLine1 Offline

Member

Registered: 04/03/02
Posts: 6785
Loc: Brick, NJ USA
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.
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#198818 - 02/05/11 01:34 AM Re: minimum OCPD for wall oven [Re: Niko]
Niko Offline
Member

Registered: 08/17/06
Posts: 358
Loc: Campbell, CA
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
_________________________
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#198821 - 02/05/11 07:31 AM Re: minimum OCPD for wall oven [Re: Niko]
SJT Offline
Member

Registered: 07/24/02
Posts: 242
Loc: PATCHOGUE, N.Y.
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)
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