I'm installing a new 7.4kw wall unit range. 30.8a @240v.
Manufacture says minimum circuit size is 40 amps.
So, I've installed a 40a breaker with #6 aluminum for branch ckt.
What alarms me is the factory installed whip that came with it is #10 with a 12awg neutral.
I can't recognise what insulation type these conductors are but assuming 75c terminations 10awg is only rated for 35 amps. Why would manufacture want to use wire smaller than the 40a ocpd can protect?
What am I overlooking? Is this ok because it's a ul approved assembly?
Also, Am I required to derating for ambient temperature since jbox is behind the range?
If so, how do you determine what temp to use?
Manufacture says minimum circuit size is 40 amps.
So, I've installed a 40a breaker with #6 aluminum for branch ckt.
What alarms me is the factory installed whip that came with it is #10 with a 12awg neutral.
I can't recognise what insulation type these conductors are but assuming 75c terminations 10awg is only rated for 35 amps. Why would manufacture want to use wire smaller than the 40a ocpd can protect?
What am I overlooking? Is this ok because it's a ul approved assembly?
Also, Am I required to derating for ambient temperature since jbox is behind the range?
If so, how do you determine what temp to use?