It depends on how the original units were wired.
In a newer house you will have a separate 30 amp circuit to both the oven and cooktop.
In some older houses they ran a 50 amp circuit and split it, generally at the oven or cooktop Jbox, to power the oven and cooktop together.
Your new range will require a 40/50 amp circuit.
How old is your house?
What size/type of wires do you have at each existing box?
Seperate breakers for oven/cooktop?
What size breaker(s)?
Last edited by 220/221; 12-26-2007 at 02:31 AM.