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-   -   wire feed size for dble oven setup ? ? ? (http://www.diychatroom.com/f18/wire-feed-size-dble-oven-setup-26586/)

yes.itsconcrete 09-10-2008 08:28 AM

wire feed size for dble oven setup ? ? ?
 
had to remove kitchen's stack'd ovens & found #12 ( bld, red, white, bare gnd )from jct box to appliance,,, found line feed from box is alum so will replace w/copper sheath'd - what size wire ? ? ? existing # 12 to jct box OR increase to # 10 ? ? ? code determines which,,, figure 30' from panel to jct box - THANKS, GUYS ! ! ! appreciate the help.

joed 09-10-2008 08:32 AM

#12 is good for 20 amps, #10 good for 30 amps. What size breaker does the manual for the ovens say it requires?

yes.itsconcrete 09-10-2008 08:38 AM

twin 20s stack'd together w/common throw bar printed ' 40a ',,, who knows where the ovens' manuals are ? ? ?

Stubbie 09-10-2008 08:58 AM

Are you replacing or just reinstalling the existing ovens? Are you talking about a quadbreaker that has 2 twenty amps and a handle tied 40?

yes.itsconcrete 09-10-2008 11:59 AM

just reinstalling existing, stub,,, ' quadbreaker ' - izzat what they're called ? ? ? YUP, 2 twenty amps and a handle tied 40,,, you been down in my basement ? ? ? :laughing:

Stubbie 09-10-2008 12:13 PM

Ok if I'm understanding correctly you have an aluminum branch circuit from the panel to the oven jb then a appliance whip(s) to the ovens. The appliance whip(s) have a black, red, white, and bare. I doubt the 20 amp breakers serve the ovens only the handle tied 40. For a 40 amp branch circuit the cable should be #8 awg copper. If the whip(s) are factory and I would think they would be just connect them in the jb with the #8 cable wires.

It would be nice to know the nameplate information as to the amperage voltage requirements of these double ovens....:)

daxinarian 09-10-2008 12:35 PM

if I am understanding your post right, there is two 20 amp breakers tied together. If thats the case, #12 copper wire is appropriate. Even though its a "40 amp" breaker, each hot conductor has a 20 amp breaker protecting it (20 amp = #12). If its really two 20 amp breakers tied together, thats a 20amp double pole breaker (20 amps of 220/240V)

yes.itsconcrete 09-10-2008 02:42 PM

we have a gas cooktop so that's it for this circuit, stub,,, yes, alum from panel box to jct box,,, copper # 10 whip wires from jct box to wire studs on ovens,,, how much more can it be to up to #8 ??? labor's the same effort whether i'm pulling 8 or 10, right ??? here's a kicker - bare copper gnd wire was nutted onto the main feed gnd,,, think that's ok, tho, as it went back to the panel box which is tied into copper ground rod stake outside.

appreciate your advice & time, stub.

yes.itsconcrete 09-10-2008 02:45 PM

have gas cooktop so that's it for this circuit, stub,,, yes, alum from panel box to jct box,,, copper # 10 whip wires from jct box to wire studs on ovens,,, how much more can it be to up to #8 ??? labor's the same effort whether i'm pulling 8 or 10, right ??? here's a kicker - bare copper gnd wire was nutted onto the main feed gnd,,, think that's ok, tho, as it went back to the panel box which is tied into copper ground rod stake outside.

tag's gone from ovens OR hidden by cover which i'm too (*^#@%^ tired to take off & look at right now :wink:

appreciate your advice & time, stub/dax/joed

Stubbie 09-10-2008 04:44 PM

Quote:

here's a kicker - bare copper gnd wire was nutted onto the main feed gnd,,, think that's ok, tho, as it went back to the panel box which is tied into copper ground rod stake outside.
I'm somewhat confused... the appliance wires that are #10's are black, white red and bare...is that correct?

What are you calling the main feed ground?

Is the aluminum supply cable from the panel 2 hots and a bare or 2 hots, a white wire and a bare wire?

In most double ovens the supply is only 240 volts and most generally a 40 amp branch circuit.

I'm trying to determine what your ovens require... 240 volts only.. or 120/240 using a neutral wire.


You also stated you currently have #10 wires in the whip to the ovens, what size wire is the aluminum from the panel to the oven jb?

yes.itsconcrete 09-10-2008 05:36 PM

so's i confused :laughing: & wish i spoke better electrical,,, anyway, just bought 35' of sheathed # 8 for box-jct box run,,, we'll nut to the whip's 10s.

' main feed ground ' is the ground line hooked onto the panel box to which stud(s) all other grounds should be attached.

i got 1 copper hot coming off each breaker,,, found another jct box 1/2 where the copper's nutt'd onto aluminum,,, cheap bastard :censored:

now that this is changed out, better ck behind some other receptacle covers.

frenchelectrican 09-10-2008 06:35 PM

The term of sheathed wire useally called NM { NonMetalic } AKA Romex which it normally have black , red, white and bare { XX-3 W/G } { XX - the wire size useally in AWG like 12 or 10 or 8 or other size }

The nameplate info on the double wall oven useally either near upper or lower door it will have tag somewhere { useally can't miss that } it will tell the KW and voltage on it some case amparage as well.

Most double wall ovens useally run either 30 or 40 amp depending on the manufacter set up { that why you need to double check with the info tag on it.

Merci,Marc

220/221 09-10-2008 06:44 PM

Double oven = 8/3 NM on a 40 amp breaker.

I repaired a single oven burned wirenut connection yesterday and the factory whip had #14's running to it :jester:

chris75 09-10-2008 07:10 PM

Quote:

Originally Posted by 220/221 (Post 156996)
Double oven = 8/3 NM on a 40 amp breaker.

I repaired a single oven burned wirenut connection yesterday and the factory whip had #14's running to it :jester:


True, but the factory wire they use has much higher insulation value then what we use.

frenchelectrican 09-10-2008 07:18 PM

Belive or not but true the factory wiring is much higher than standard building wire and one wire I did see one marked 150C and other one IIRC I think it was about 220C { either 210 or 250C } so they can take a bit of heat there.

Merci,Marc


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