Electric oven - gas cooktop

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goldstar

goldstar

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Location
New Jersey
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Electrical Contractor
We recently rewired a kitchen where the specs for the gas cooktop/electric oven (combination unit) called for a 30 amp line for the oven section. At the final install the appliance came pre-wired with a 4', 50 amp cord & plug. The installation manual called for a 50 amp receptacle yet still only required a 30 amp circuit. I did not have the 50 amp receptacle with me but did have both the 30 amp receptacle and cord/plug set. I changed out the 50 amp cord with the 30 amp and installed the 30 amp receptacle. Is there a code violation here or can these units be converted in the field as I did ?

Thanks in advance,

Phil
 
I'm guessing you have violated its listing unless perhaps the appliance store put that 50 amp plug on the oven. Where did the 30 amp number come from??
 
Would not surprise me if it was the appliance store that actually installed the cord not the manufacturer.

I wouldn't loose any sleep over it.
 
30A ckt - 50A cord

30A ckt - 50A cord

I have seen these in the field - mfr. calls for 30A circuit and OCP yet supply a 50A cord [their installation literature spells this out]- I figure they are just being over cautious with the cord set.
 
Table210.21 (B)(2) limits the load to a rec. to 80% of the rating of the rec. So I guess it depends on the load for the electric oven and if this is an individual rec. for that load.
 
dana1028 said:
I have seen these in the field - mfr. calls for 30A circuit and OCP yet supply a 50A cord [their installation literature spells this out]- I figure they are just being over cautious with the cord set.
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What they are doing is setting people up to do something that would break code.
If you were replacing your electric range with this new stove and you only called a gas fitter in to install a gas line, then with the cord set they supplied with the range you could plug it in and the gas fitter would hook his side up and you would have a working stove. But this would not be legal as it is a 30A rated stove, not a 50A rated stove.

This is not really the right way to be doing this, they really should be supplying the correct cord set to ensure more people comply with proper electrical hookups required.
 
I say change it. If the OCPD is at 30A and the wiring is sized accordingly with the demand of the appliance then what's the issue? If your coffee pot used 4 amps and came with a 40 amp plug would you change the cord or the receptacle.
 
Interesting there treating the resistive load like a motor, thats over 150% for the plug!

One needs to always breaker the service and address the load, Ovens are just different in the NEC!

Or should I say via addressing the load!
 
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I hate doing residential kitchens, new or remodel. It seems as though you can never get the correct appliance information until they're actually on the job. Anyway, there was nothing in the mfr's "on line" literature that indicated that this unit would come shipped with a 50 amp cord. My guess is that somewhere in the manufacturing anals of this company some empty suit decided to ship all these ranges out with the same cord irrespective of the amperage requirements. It seems all their ranges are manufactured the same way except for the amperage requirements. Why stock 2 different cords ?

Anyway, I installed the 30 amp plug and receptacle and thanks Scott, I will not lose any sleep over this.
M.D. said:
All the ones I have seen have flex and require a junction box..
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I've only seen wall ovens come that way.
 
George Stolz said:
Why not just install a 50A receptacle and walk away? 210.21(B)(1).
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What Scott said.

If they wanted me to supply a 50 amp receptacle (which I would have with no questions asked) they should have included that info in their "on-line" instruction manual. They should have also included the fact that the appliance came with a 50 amp cord so that I would not have had to buy that also.
 
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