208V Appliance Circuits

[texie]

I am not using the wrong formula, you are misunderstanding the OP's point. Reread his posts #1 & #8.

He is decrying the fact that a 12000W/240V range will under-perform on a 208V circuit. He further suggests that one can install a 12kW/208V rated range. The 12kW/208V range on a 208V circuit will have a higher load current (57.7A) than the 12kW/240V range on a 240V circuit (50A.)

I agree. The OP gets the math. I think he is saying the same thing I said in post #13. It is an annoyance to some customers who are serious cooks. I've even had customers who say they have the exact same range, etc at their other home "up north" and want to know what is wrong. When try to explain this to the owner of a very expensive condo, they think it is lame.

 

[Hv&Lv]

I am not using the wrong formula, you are misunderstanding the OP's point. Reread his posts #1 & #8.

He is decrying the fact that a 12000W/240V range will under-perform on a 208V circuit. He further suggests that one can install a 12kW/208V rated range. The 12kW/208V range on a 208V circuit will have a higher load current (57.7A) than the 12kW/240V range on a 240V circuit (50A.)

You are correct sir, and I apologize to you and anyone else offended with my wrong assumptions. I was on another tangent because I had this conversation about two weeks ago with a home builder.
In the case of the stoves being interchanged and the NEC addressing this issue. I know some ranges are dual rated for 240/208. For a range that is specifically for 208 what information is on the nameplate? I assume it says 208 volts, and makes no reference to 240 volts, or it would be a dual rated range. In this case, the NEC does address this issue in 422.60 IMHO.

 

[kwired]

You are correct sir, and I apologize to you and anyone else offended with my wrong assumptions. I was on another tangent because I had this conversation about two weeks ago with a home builder.
In the case of the stoves being interchanged and the NEC addressing this issue. I know some ranges are dual rated for 240/208. For a range that is specifically for 208 what information is on the nameplate? I assume it says 208 volts, and makes no reference to 240 volts, or it would be a dual rated range. In this case, the NEC does address this issue in 422.60 IMHO.

I was not offended, but thanks anyway. The point was simply that there was a different model, regardless of what marked ratings actually say, that has a different resistance of its heating elements, change the resistance and the current will change for both voltages also. In reality it is probably just a larger kW rated standard unit, possibly with nameplate only mentioning 208 volts though.