"Warren S." <

[email protected]> wrote in message

Warren, are you sure that it doesn't say Kw and not Kv? It makes a

major difference in the interpretation.

If it is Kw, a 6.4 Kw load operating at 240 volts resistive load will

draw 26.66 amps as you correctly deduce.

While you could operate it from a 30 amp breaker, you may run into

intermittent trip problems with the breaker when the oven is running

at full capacity for an extended period of time. I'd personaly go for

the next higher capacity breaker, be it 40 or 50 amps, but be sure to

size the wire guage accordingly.

For 50 amps, I'd run #8 wire, although #10 may marginally satisfy NEC

requirements (I don't have a copy of the NEC handy here at home).

Another factor is the distance between your distribution box and the

oven, but I'm assuming that it is less than a 50-ft wire run. Realize

that the cost of the wire is likely the least expensive thing in the

project, because that wire will likely be there to provide service for

many years.

Licensed Electricians, please correct me if I'm wrong here, because I

don't want to steer the guy in the wrong direction and most of my

practical experience here is with 3,000 MCM or larger traction power

cables on subways and #24/26 signal and communicatons wiring. I also

generally assume that #14 is used for 15 amps, #12 for 20, and #10 for

30 amps, so I'm not entirely sure that #8 is adequate for a 50 amps

(but didn't want to suggest #6 which many homeowners have problems

working with).

My personal preferance here would be for a 40 amp breaker feeding #8

wire, however I'm not sure if 40 amp breakers are readily availble for

domestic distribution panels, but I know that 50 amp breakers are.

Then too, I'm a control system guy, so what do I know!

Harry C.