Oven and dryer receptacle

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steve66

steve66

Senior Member
Location
Illinois
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Engineer
Is there a standard size circuit you install for an electric oven if you don't know exactly what model will be installed?

How about for a electric dryer?

I was thinking about showing a 40/2 for the oven, and a 30/2 for the dryer on a set of plans that are to be bid.

Steve
 
steve66 said:
Is there a standard size circuit you install for an electric oven if you don't know exactly what model will be installed?

How about for a electric dryer?

I was thinking about showing a 40/2 for the oven, and a 30/2 for the dryer on a set of plans that are to be bid.

Steve
Click to expand...

That's about all you can do. Specify a circuit size, and have the owner or builder sign it. If it turns out to be wrong, you've got some ammo.

Otherwise, submit an RFI.
 
Lets expand the thread and include dishwashers, I ran a circuit 12 AWG, 20 AMP for the "new" undercounter unit
and they plumber it up in and screwed it in place over night with no power cord...:rolleyes:...
 
cadpoint said:
Lets expand the thread and include dishwashers, I ran a circuit 12 AWG, 20 AMP for the "new" undercounter unit
and they plumber it up in and screwed it in place over night with no power cord...:rolleyes:...
Click to expand...

did you send the plumber a nice thank you card for the extra $200 he made you?
 
cadpoint said:
Lets expand the thread and include dishwashers, I ran a circuit 12 AWG, 20 AMP for the "new" undercounter unit
and they plumber it up in and screwed it in place over night with no power cord...:rolleyes:...
Click to expand...

The only reason you should have to have the DW mobile would be if the receptacle is behind it. I often install the cord after it's screwed in place.

By the way I'm 5" tall. ;)
 
steve66 said:
Is there a standard size circuit you install for an electric oven if you don't know exactly what model will be installed?

How about for a electric dryer?

I was thinking about showing a 40/2 for the oven, and a 30/2 for the dryer on a set of plans that are to be bid.

Steve
Click to expand...

Standard resi dryers are 30 amps.

Single ovens can be 20 amps usually but some times 30. Double ovens can be 30 or 40 amp.

I don't understand the terms you used. 40/2 30/2 :confused:
 
I always figure 10/3 for the dryer and 6/3 for the oven. Seems to work.

2 things that have bit me in the past are the hood and micro. The plans can just show a hood but some people need the commercial model w/ the remote fan and needs a circuit all to it's own.

Had a micro that turned out to be part convection oven and needed 240V 30A. The first time this reared it's ugly head was in a house that we were trimming out (ie all nice and painted/ finished) with the panel one level below and several finished rooms away. Being the electrical ninjas that we are :D we were able to feed this w/ no drywall damage.
 
steve66 said:
I was thinking about showing a 40/2 for the oven, and a 30/2 for the dryer on a set of plans that are to be bid.
Click to expand...
The breakers can be selected later. Your question should be about cable type and size.

The dryer will be happy with 10/3 NM; the choice is between 8/3 and 6/3 for the range.
 
steve66 said:
Is there a standard size circuit you install for an electric oven if you don't know exactly what model will be installed?

How about for a electric dryer?

I was thinking about showing a 40/2 for the oven, and a 30/2 for the dryer on a set of plans that are to be bid.

Steve
Click to expand...

Even without you knowing the models don't they have some sort of detail sheet laying out what sort of amperage they want for the plugs? If not maybe they're playing it by ear too. :D

I'd agree with Larry though. 8/3 or 6/3 is the norm.
 
Standard range name plate says 12kw max @ 240v is 50amp. Run 6-3 copper. Standard dryer name plate says 7.2kw max @ 240v is 30amp. Run 10-3 copper. You will never have a problem. The only time the renge will ever come close to using 12,000 watts is when all cook top burners and oven is on at same time.;)
 
cadpoint said:
Lets expand the thread and include dishwashers, I ran a circuit 12 AWG, 20 AMP for the "new" undercounter unit
and they plumber it up in and screwed it in place over night with no power cord...:rolleyes:...
Click to expand...

That's common around here. Dishwashers are designed to be wired from the front after they are installed and secured into place. I have never wired one any other way.
 
Thanks for the replies.

Scott: Sorry about the unclear notation: 40/2 was meant to be a 40Amp, 2 pole breaker.

I'm just doing the design drawings now, and of course, the architect doesn't have any cut sheets. I'm just trying to show it so we can get it covered by the bid. Hopefully, by the time the contractor starts installing, the architect and owner will have some ovens and dryers selected.

I'll bump the ovens up to a 50 amp circuit to be sure its covered on the bid. And I add a note for a 4 wire feed.

It sounds like the dryer should be OK with 30 amps.

And yes, we do have some of those built in microwave/fan things.

Steve
 
I called a local appliance supply place one time and asked them what the largest required circuit is for all their ranges. 40 amps was the answer. For a modest house that will probably just have one range 40 amps will probably be fine. You could call your appliance places near you and ask them or goto Home Depot or look online. I think I checked online also. I could maybe see if there's going to be a cook top, some kinda two oven setup or something out of the ordinary then you might need a larger branch circuit.
 
erm, usually range/oven circuits dont exceed 50 amps, and 8/3 romex is legal to use on a 50 amp breaker

(assuming that the breaker lugs and device lugs are rated for 75 degrees centigrade) (which there is a 99 percent chance that they are, based on what ive seen and read)
 
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