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Replacing a range hood with microwave: New 20 amp circuit or no?
Posted on 6/12/21 at 6:01 pm
Posted on 6/12/21 at 6:01 pm
So, I’m replacing the range hood on my “new-to-me” house, and I need to install a new outlet for the above range microwave. Have y’all ever done it, and if so, did you run a new circuit or did you leave it on the same circuit the range hood was on?
I know the “right” way to do it is to have a new circuit installed, but that’s above my mental capacity.
I know the “right” way to do it is to have a new circuit installed, but that’s above my mental capacity.
7
Posted on 6/12/21 at 6:03 pm to finchmeister08
A microwave should have its own, dedicated 20a circuit.
Posted on 6/12/21 at 6:47 pm to finchmeister08
The first question is was the hood on one of the 2 small appliance branch circuits (SABC) or was it on a dedicated circuit or was it on another shared circuit. Often hoods are on a dedicated circuit for just the eventuality.
Posted on 6/12/21 at 6:56 pm to finchmeister08
I’d install the microwave on the same circuit.
If it causes problems, then I’d address the issue.
If it causes problems, then I’d address the issue.
Posted on 6/12/21 at 6:58 pm to finchmeister08
It’s not the breaker it’s the wire what gauge wire do you have? If you have the proper gauge wire you can just add a 20 amp breaker if not then don’t you need to pull new wire & that’s not that difficult to actually do.
Posted on 6/12/21 at 7:00 pm to Obtuse1
This house was built in ‘94 so I’m not exactly sure. I remember turning the fan on and going out and flipping nearly every switch to find the right one until it went off. I got tired of flipping so I just switched the whole damn house off and unwired the hood.
This post was edited on 6/12/21 at 7:02 pm
Posted on 6/12/21 at 9:25 pm to GeauxldMember
quote:
A microwave should have its own, dedicated 20a circuit.
This is the way.
Posted on 6/12/21 at 9:54 pm to WPBTiger
I’m no electrician. How many of you have done this yourself?
Posted on 6/12/21 at 10:30 pm to finchmeister08
You’re replacing a hood with a microwave? So you obviously don’t cook
Posted on 6/12/21 at 10:46 pm to finchmeister08
If you have a gas oven,sometimes the circuit would be pulled to the exhaust vent and then down to the igniter on the gas cooktop. Therefore if that were the case then you could put the microwave on the same circuit the exhaust fan is on
Posted on 6/13/21 at 12:09 am to papasmurf1269
quote:
If you have a gas oven,sometimes the circuit would be pulled to the exhaust vent and then down to the igniter on the gas cooktop. Therefore if that were the case then you could put the microwave on the same circuit the exhaust fan is on
That’s exactly what I have. A gas stove top. I’m not exactly sure if it’s set up the same way you describe though.
Posted on 6/13/21 at 6:15 am to finchmeister08
quote:
Replacing a range hood with microwave
About to do the exact opposite and put in a microwave drawer bc the microwave is useless for getting rid of the fumes. Microwave above stove looks like shite too.
Posted on 6/13/21 at 8:22 am to questionable
Well, I do like this idea:
But the size of my kitchen may not allow it:
Unless I convert of those pantry cabinets over there by the door to the garage.
But the size of my kitchen may not allow it:
Unless I convert of those pantry cabinets over there by the door to the garage.
Posted on 6/13/21 at 8:25 am to questionable
quote:most tend to have an exhaust fan built in them.
bc the microwave is useless for getting rid of the fumes.
Posted on 6/13/21 at 10:36 am to GeauxldMember
quote:
microwave should have its own, dedicated 20a circuit.
A 1200 watt microwave would not require more than a 15 amp circuit.
A dedicated circuit is required by code if it is a fixed unit, such as a a fixed exhaust/microwave combo. I would hope the OP is doing that rather than eliminating the range hood altogether. With the addition of the hood vent, I would think a 20 Amp circuit would be advisable./
If the microwave is a countertop model, NEC does not require a dedicated circuit. Probably still a good idea if it is feasible.
Posted on 6/13/21 at 10:46 am to mdomingue
Aren’t OTR Microwaves around 1000watts? If so, would a 15amp circuit be fine just like you said?
Posted on 6/13/21 at 11:39 am to finchmeister08
quote:
Aren’t OTR Microwaves around 1000watts? If so, would a 15amp circuit be fine just like you said?
Seems most are and yes, 15 Amps would be fine. 1000watts at 120 volts is 8.33 Amps. Throw in a bit for the exhaust vent and controls and you won't be drawing 10 amps on that circuit.
Posted on 6/13/21 at 12:25 pm to mdomingue
Just out of curiosity, if 15 amps is fine, why is 20 amps the recommended?
Posted on 6/13/21 at 8:23 pm to finchmeister08
if you put in a dedicated circuit, a 20 amp circuit allows for future eventualities. Even a 1200 Watt Microwave is about 10.5 amps but there is a possibility that you use the circuit for something else in the future so why not go with a little larger if it is a new installation. In your case, if I understand correctly, it isn't and it sounds like you have a 15 amp circuit (14 gauge wire) already.
Also a 20 amp circuit means a larger wire so lower resistance in the wire therefore less voltage drop. That is not typically an issue for this type of household circuit, however.
Also a 20 amp circuit means a larger wire so lower resistance in the wire therefore less voltage drop. That is not typically an issue for this type of household circuit, however.
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