Wiring Subpanel

kst43368February 25, 2013

New member. First post. Thanks in advance for your advice.

I plan to remodel my kitchen this summer and need to add a subpanel to my existing 100 amp main lug panel to add the appliances I'd like to get. The subpanel would be about 40' from the main panel. I would need to run a cooktop (likely induction) and a combination wall oven/microwave from the subpanel, at a minimum. I may also add my refrigerator (currently running on one of my kitchen's small appliance circuits) and a 20 amp circuit for a new basement bathroom eventually (the last two are not must haves). I was thinking of using a 60 amp subpanel, ideally with at least 8 spaces.

What kind of wire do I need to feed the subpanel? Can I use 8/3 with a ground? Or do I need to use 6/3 with a ground?

Does a 60 amp subpanel sound sufficient for this load?

Thanks again.

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Ron Natalie

You'd need to look at the specifications of the individual appliances. Induction cooktops are typically power hogs in their won right.

60A requiers #6.

    Bookmark   February 26, 2013 at 7:34AM
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This is probably not the answer you want, but call an electrician. You are asking about a fair bit of work, which may require a service upgrade. You should have a load calculation done to determine how much demand is on your existing service- if you add a subpanel, you could trip the main due to overloading. BTW, 60A may be too small for the load you want to connect. Evaluate the existing service first to avoid potential problems, then load calc for your new work. Get several estimates- best value may not equal cheapest. Good luck!


    Bookmark   February 26, 2013 at 7:56AM
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As you are remodeling, you should bring your kitchen up to current code.
Two 20 amp, GFCI protected, small appliance circuits.
Separate circuits for appliances such as refrigerator, dishwasher, microwave, etc.
I would also put all kitchen circuits in the subpanel rather than leave some 40 feet away in the main.

    Bookmark   February 26, 2013 at 11:13AM
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Ron Natalie

That is a mischaracterization of the requirements.
The code requires two (at least) two small appliance circuits serving all the receptacles in the kitchen and NO OTHER OUTLETS. Only the countertop receptacles are required to be GFCI protected. There is no code mandate for separate circuits for individual appliances unless their installation instruction requires it (though it's not a bad idea).

    Bookmark   February 26, 2013 at 12:03PM
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