I'll take a 240 volt range as well. Primarily looking for one that will be on a 30 amp breaker.
The math is 75%, so resistive heating elements rated at 240V 40A should be rated at 208V 30A. Although I did not confirm by reading 220.55 that this works for ranges
That seems to be about impossible for the searches I have done. Apartment sized are still 4 elements plus the oven.
The question is whether it is OK NEC-wise to take the 240V kW rating and multiply by 75% to get the 208V kW rating. As that is what the physics says (for a constant resistance approximation; if the resistance of the element rises with temperature, it could be that the draw is somewhat over 75%).
Hmm. I don't think it's ok NEC-wise. As far as I know from the NEC, and previous threads on this forum discussing this issue, you have to use the nameplate rating, whether you use table 220.55 or an optional calculation. So you can't derate the range by 75%, when calculating the feeder. You can only derate when calculating the branch circuit to the range. If I'm wrong, please correct me.
Agreed that ideally you'd find a range with a nameplate saying some like "Voltage: 240/208V" and "kW Rating: 10.0/7.5".
Doesn't make sense to me.
E.g. something like the image below (actually the first image result for my google image search for "range nameplate"):
Can you still get a woman that is capable of using 4 burners?
We know that Almost never would they all be full on at the same time. I'd be tempted to put the 30 amp breaker on it and go down the road.
I use propane but I don't think I've ever used more than 2 burners at once. Not to mention I hardly ever use the oven. I've got a grill and a smoker right outside under roof, not to mention a crockpot and a microwave. I think a 4 burner range is really a throwback to another time when you were making eggs, and potatoes, and had a percolator on the burner. And on Sundays mom made a roast and baked pies
I've been on service calls with the range (over 8K) on a 30A breaker. H.O. said it had never tripped.
