Do I need to run a seperate home run?
My customer has a cooktop who’s 8 gauge wiring is jumped to the wall oven(within a few feet of each other), and then from the oven to a double 40 breaker. I know I need to calculate load still, but is this common practice. I would assume upgrading to a double 50 might suffice, but a seperate double for each would be ideal. Do I need a seperate home for each appliance or can I leave as is or upgrade to a double 50?
Replies
bumpski
here it's seperate circuts...
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same here (Ont, Canada) built in appliances require their own circuits
The NEC specifically allows taps on a branch circuit to feed cooktop(s) and oven(s)
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There shouldn't be much difference between the amperage draw, between a seperate oven and cooktop, and a range which combines both.
AFIK code allows them to be on the same circuit. To size it you need to add up the wattage of the elements.
Edited 7/7/2009 3:02 pm ET by Jigs-n-fixtures
Thanks all. I just need to install a double 50 instead
"Thanks all. I just need to install a double 50 instead"
Most 8 gauge wires wires are only rated for 40 amps, IIRC.
Jon Blakemore RappahannockINC.com Fredericksburg, VA
"Thanks all. I just need to install a double 50 instead""Most 8 gauge wires wires are only rated for 40 amps, IIRC."
That is true if this is a cable.
THHN in pipe is rated at 50a if the terminations are 75c rated but that is unusual in a dwelling that is not in Chicago.
That's why I said "most".
Jon Blakemore RappahannockINC.com Fredericksburg, VA