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Old 10-30-2008, 06:54 PM   #1
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Kitchen Wiring Requirements


Hi. I am wiring a new kitchen. So far I have ran the following circuits:
circuit 1 20 amp receptacles
circuit 2 20 amp receptacles
circuit 3 20 amp dedicated to a window air conditioner
circuit 4 15 amp overhead lights

Can anyone tell me what the requirements are for:
the dishwasher
the garbage disposal
the microwave oven

Do these so called fixed appliances require their own separate circuits, or can they share wiring added so far, or perhaps an additional circuit. Seven circuits for a small kitchen seems excessive to me.

Also, I was planning to plug the refridgerator into whatever wall receptacle is convenient.

Thank You

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Old 10-30-2008, 07:27 PM   #2
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Kitchen Wiring Requirements


Built in micro = 20 amp circuit

DW/Disp = 20 amp circuit (generally)

Refer can go with the counter top receps. Bring the home run to the refer so it's not GFCI'd.

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Old 10-30-2008, 09:10 PM   #3
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Kitchen Wiring Requirements


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Built in micro = 20 amp circuit

DW/Disp = 20 amp circuit (generally)

Refer can go with the counter top receps. Bring the home run to the refer so it's not GFCI'd.
I agree, except about the refer. Although it is allowed to be on the small appliance circuits I never do this. The refer always gets it's own circuit. 15 or 20 amp depending on the unit. Typical resi grade unit gets 15A.
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Old 10-31-2008, 07:49 AM   #4
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Kitchen Wiring Requirements


Are you saying that the dishwasher and disposal can be on one twenty amp circuit, or that they must be on their own individual circuits?
In addition, now we are talking about the refer being on it's own circuit.
I guess that means 8 home runs to the kitchen or possibly 7 if the disposal and the d/w are combined?
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Old 10-31-2008, 08:40 AM   #5
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Kitchen Wiring Requirements


DW/Disposal can run on a 12/3 sharing the neutral if you wanted...use a tandem breaker. Put the MW and refer on it's own circuit.
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Old 10-31-2008, 08:57 AM   #6
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Kitchen Wiring Requirements


You can eliminate another home run by putting the kitchen lights on a circuit shared with another room, say a bedroom. Don't tap into the kitchen/dining room, laundry, or bath though.
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Old 02-04-2011, 10:29 AM   #7
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Kitchen Wiring Requirements


Working on planning wiring in my kitchen and this thread is great! I have a related question. I have a trash compactor. The manual says to use a separate circuit, but the plate on the compactor says it draws something like 6 or 7 Amps. Right now it's combined with the built in microwave/range hood. Could I leave it like that? Could I combine it with the fridge instead (20A circuit)? Does it actually need a separate circuit?

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Old 02-04-2011, 06:52 PM   #8
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Kitchen Wiring Requirements


Refrridgerator needs its own circuit. The only other thing allowed on that circuit is a plug in clock (you see some of these recessed receptacles in older homes above the fridge).
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Old 02-04-2011, 07:03 PM   #9
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Refrridgerator needs its own circuit. The only other thing allowed on that circuit is a plug in clock (you see some of these recessed receptacles in older homes above the fridge).
That is false.
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Old 02-04-2011, 07:04 PM   #10
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That is false.
Not in Canada it isn't
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Old 02-04-2011, 08:22 PM   #11
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Kitchen Wiring Requirements


The OP needs to put this location into his profile so the proper codes can be quoted.
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Old 02-04-2011, 08:25 PM   #12
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The OP needs to put this location into his profile so the proper codes can be quoted.
So does CheapCharlie!
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Old 02-04-2011, 09:06 PM   #13
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Kitchen Wiring Requirements


To the OP: Check out Dave's sticky NEC- National Electric code 2008 . I think it will answer your questions with minimal confusion.
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Old 02-04-2011, 11:30 PM   #14
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Kitchen Wiring Requirements


What is funny about this whole debate I really think they need to go back over the amp draw a kitchen has (since I have done them). Even old fridges I have tested only pull 4 amps with the compressor running. The new micros pull about 8.5-9.6 amps (2005 till now new micros when installed). What I find even more funny about this is a home sump pump (watchdog-zoeller) pull almost 26 amps when they start up then drop down to about 13 running but only require a 15 amp circuit. So for your kitchen I would run it this way---

I run the receps- 20 amp with a GFCI breaker in the box.
The lights normally get split into 2 circuits--- (so if you blow a breaker you still have light)
Then micro -- 20 amp
dw/garbage-- 15 amp
fridge /ld undercab lights-- 15amp.
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Old 02-05-2011, 06:56 AM   #15
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The RED is mine:
Quote:
Originally Posted by proremodel View Post

I run the receps- 20 amp with a GFCI breaker in the box. Waste of $$ IMO. GFI's at the device are also more convenient.

The lights normally get split into 2 circuits--- (so if you blow a breaker you still have light) Silly philosophy IMO. There is ALWAYS residual light, unless of course you are in a bathroom at night. How often does a lighting breaker trip anyway, ESPECIALLY a newly run circuit.

Then micro -- 20 amp Agreed

dw/garbage-- 15 amp Absolutely disagree. 20A circuit if they share a circuit.

fridge /ld undercab lights-- 15amp. Code violation. If you knew the code you'd have known this. Codes matter just as much as your "calculations".

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