I’m upgrading a double wall oven with a single oven, speed oven and warming drawer. I have two 40A, 240V circuits going to this area. The single oven requires 20A, 240V. The warming oven requires 15A, 120V. I have a choice of speed ovens; 30A, 240V or 15A, 120V.
I would prefer the 30A, 240V speed oven but the installation instructions are quite emphatic that it needs its own circuit. Since running a new 120V circuit is not practical, the only thing I can think of is splitting off one of the legs for the other 240V circuit to provide the 120V circuit for the warming drawer. Since there are 40A breakers protecting both current carrying wires, and the oven needs 20A, that should still leave an extra 5A for the leg I would split off. Any opinions about doing this?
Replies
You say these are 240V circuits -- do they have neutrals? If you don't have a neutral you can't split off a 120V circuit.
And a ground.If this is properly wired older 240/120 then it will have a neutral, but no ground.He needs both..
William the Geezer, the sequel to Billy the Kid - Shoe
Luckily they are 4 wire circuits; two hot, one neutral, one ground.
You can just convert one of the 40amp circuits to a subpanel and feed your two lighter appliance circuits from there.
Good idea. Thanks.