Dedicated Circuits for Kitchen Appliances

[Smart $]

:happyyes:

Okay. That permits the cord-and-plug connection of a range hood with stipulations, one of which is receptacle must be supplied by an individual branch circuit.

 

[subman]

Simple range hood

Simple range hood

Does a simple range hood(blub and fan) require its own circuit? I know you cant tie it in on one of the SAP circuits. I was thinking of adding it to an existing 15 amp circuit.

 

[steve66]

Just wondering about required (or recommended) ampacities for dedicated kitchen appliance circuits.

...and 15A for the garbage disposal.

I guess this probably runs into the same problem as having something using more than 50% of the branch circuit rating, but a dedicated circuit to a residential disposal seems like way overkill to me.

When I use ours, the food is gone in 5 or 10 seconds, and after that I think the motor is basically just running unloaded.

 

[Dennis Alwon]

Okay. That permits the cord-and-plug connection of a range hood with stipulations, one of which is receptacle must be supplied by an individual branch circuit.

Then the question becomes "Is the micro/hood" listed as a microwave or range hood. So 422.16 may not apply however many instructions on the mw/hood specify a dedicated circuit.

Let's face it a microwave / hood and a gas range should never be an issue on a 20 amp circuit however a 15 amp circuit with a gas range that has a convection motor may be an issue.

 

[macmikeman]

GE sells a residential over the stove microwave hood that runs 240 volts 30 amps and comes with a molded pigtail that is exactly like a 4 wire dryer pigtail built onto it. High end home design outfitters will push this model at the wealthier customers so the overall sale is markedly larger for them. This is your fair warning to always ask for spec on the range hood micro unit at rough in time, and not assume it will be a 20 amp , 120 volt one supplied to you at finish time. Consider it your mactip of the Day!

 

[Teaspoon]

The local inspector said that the gas range outlet CAN be on the same circuit as the over-the-range microwave oven, and that's how I have been wiring them recently. 20-amp circuit, of course.

The gas range igniter don't have any draw to amount to anything.

 

[infinity]

The gas range igniter don't have any draw to amount to anything.

As Dennis mentioned there are gas ranges that require 15 or 20 amp individual branch circuits when they contain a convection element. This is from a Samsung slide-in range:

Use a dedicated 120-volt, 60-Hz, 20-amp, AC, fused electrical circuit for this range. A
time-delay fuse or circuit breaker is recommended. Do not plug more than one appliance
into this circuit.

 

[mbrooke]

Just wondering about required (or recommended) ampacities for dedicated kitchen appliance circuits.

I realize that the overhead microwave oven should be powered by a dedicated 20-amp circuit (which includes the 120V gas range outlet below), and 15A for the garbage disposal. But what about the dishwasher and refrigerator, if these are each to be wired to a dedicated circuit. Would 15A be sufficient? Or would these also need to be 20A?

Also, for an electric range, would 40A on 8-3 copper Romex suffice? Or would 50A using 6-3 be better?

This is how I used to do it:


2-20amp SABC
1-15 dedicated for the fridge (personal fetish of mine, otherwise tapped from the SABC)
1-20 DW&P, though a 15amp MWBC is very common around here
1-20 for the microwave
6-2 latter 6-3 SEU/SER AL 40amp for the range. I know many push copper her, but SER gives the same thing for less cost. Running it is just as easy.

 

[mbrooke]

I guess this probably runs into the same problem as having something using more than 50% of the branch circuit rating, but a dedicated circuit to a residential disposal seems like way overkill to me.

When I use ours, the food is gone in 5 or 10 seconds, and after that I think the motor is basically just running unloaded.

Funny you mention this, but around here it was common (mandated by the inspectors for years) to have a dedicated circuit which usually amounted to a 15 amp MWBC. Always found it dumb but its what we did and called it good.

 

[Smart $]

Then the question becomes "Is the micro/hood" listed as a microwave or range hood. ...

There's UL 710 Standard for Exhaust Hoods for Commercial Cooking Equipment, and there's UL 858 Standard for Household Electric Ranges which includes ventilating hoods integral with the range, but is there a listing for a residential stand-alone hood?

Broan and NuTone make statements there hoods are UL listed, but I haven't tracked down exactly what are they listed as... ???