Safe to wire microwave, garbage disposal, dishwasher and stove on one circuit?

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Smokey M

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Electrical contractor is attempting to wire microwave, garbage disposal, dishwasher and stove on one circuit. Is this practice safe?
 
As I read 210.23a 2 for these equipment than they can if it does not exceed 50% of the branch circuit rating, with the exception of the stove.
I would not put micro on with anything else.
Garbage and dishwasher maybe if I was being cheap.
My comment is assuming everything is fastened in place.
 
AC\DC said:
As I read 210.23a 2 for these equipment than they can if it does not exceed 50% of the branch circuit rating, with the exception of the stove.
I would not put micro on with anything else.
Garbage and dishwasher maybe if I was being cheap.
My comment is assuming everything is fastened in place.
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Disposal / DW together is common here and never a problem. The disposal doesn’t run long enough to matter.
 
What do the directions that come with the dishwasher say? They may require an individual branch circuit.
 
Smokey M said:
Electrical contractor is attempting to wire microwave, garbage disposal, dishwasher and stove on one circuit. Is this practice safe?
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Welcome to the forum.

Safe? Depends. First, we need an answer to the gas/electric stove question. Also, a plug-in or cabinet-mounted microwave?

If you mean for a gas stove, possibly "safe" with a properly-wired and -protected circuit. Code compliant? Not even almost.

If you're talking about tapping lines for those 120-volt appliances from an electric stove/range circuit, not safe or compliant.

Why aren't there at least two 120v appliance circuits already? Is this part of a conversion of a room not originally a kitchen?

You should really send your " Electrical contractor" here. We'll set him or her straight. :sneaky:
 
Dennis Alwon said:
Stove is usually just an igniter.
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While we've never used it, our mid-level GE has an electric warming drawer. I've looked in the manual and not found specifications. I've not pulled it out to look. BUT, as a heating element, I doubt it being under 500W.
 
I believe 422 has something regarding a microwave or range hood combination that is cord connected needs to be on an individual circuit. I don't have my code book in front of me right now.
 
NTesla76 said:
I believe 422 has something regarding a microwave or range hood combination that is cord connected needs to be on an individual circuit. I don't have my code book in front of me right now.
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Yes it does -- 422.16(B)(4) but we don't know any info on this. Most instructions for a mw also state a separate circuit is needed

Some microwaves are 1200-1600 watts. That is a minimum 10 amps for the mw alone. Now add the disposal and dishwasher and that may be an issue. Will it work? Maybe, Is it compliant, IMO It is not.
 
Dennis Alwon said:
Yes it does -- 422.16(B)(4) but we don't know any info on this. Most instructions for a mw also state a separate circuit is needed

Some microwaves are 1200-1600 watts. That is a minimum 10 amps for the mw alone. Now add the disposal and dishwasher and that may be an issue. Will it work? Maybe, Is it compliant, IMO It is not.
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It will work fine as long as you only run one appliance at a time. Not much different than not being able to run a coffee pot and a waffle iron on the same circuit at the same time. None of this kind of thing is about safety. If you overload the circuit the OCPD will safely open it up.

The code itself says this:

The purpose of this Code is the practical safeguarding of persons and property from hazards arising from the use of electricity.This Code is not intended as a design specification or an instruction manual for untrained persons.
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Yet these kind of requirements have nothing to do with safety and are inherently a design specification.

It is just a matter of time before the code requires some kind of super duper breaker on every circuit that includes some kind of video camera that watches to make sure the user only plugs in what the camera thinks is an appropriate amount of load.
 
are you sure he's licensed electrician? No competent electrician would do what you state. It's safe but you'll be resetting the tripped CB often

microwave is 12-16 amps. DW is 8-12.
 
Dennis Alwon said:
There is no way that a normal size microwave can be on the cir. with a dishwasher and disposal. Stove is usually just an igniter.
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be careful with the mid to expensive gas ranges because they have an electric element for the convection oven operation. My GE range uses 10amps @ 120v and I know another LG that's 8amps
 
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