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Old 12-22-2017, 02:00 PM   #1
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Cooktop and Oven Wiring


The house I bought came with a range oven wired on a 40 amp breaker with Romex-type 3 wire (2 hots and a neutral). I want to replace this with a separate cooktop and oven situated at the end of a peninsula counter about 4 feet into the center of the kitchen from the wall. To give a better idea of the peninsula, there will be two 24" cabinets against the wall facing away from each other then 30" cabinets against those. One side will be bar seating, the other side will have the oven and drawers.

I have a Frigidaire FFEC3025LW1 208/240 cooktop but I haven't bought an oven yet and I haven't been able to determine the wattage requirements for the cook top.

Can I wire both units to one junction box or do I need a separate feed to the panel? What's the proper way to run the feed line to the j-box in the cabinet? Can the line be run under the kick panel then up into the cabinet or must the line go through the cabinet
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Old 12-22-2017, 02:26 PM   #2
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Re: Cooktop and Oven Wiring


No, 3 wire Romex without a ground never was a compliant install. Run 2 new circuits.

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Old 12-22-2017, 04:02 PM   #3
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Re: Cooktop and Oven Wiring


Thank you for the quick reply. It's not actual Romex but what looks to be three 6 or 8 gauge wires in a black PVC looking sheathing. I've seen it installed in a few places here in Florida so I'm fairly certain it's code, or was in the 80's when the house was built. It originally terminated in a 240V 3 wire outlet at the end of the cable, not mounted to the wall.
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Old 12-22-2017, 04:06 PM   #4
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Re: Cooktop and Oven Wiring


1) There's another active cooktop thread you may want to read
2) 3-wire to me means 2 hots + neutral + gnd. Is that what's meant here?
3) No real plans can be made without the specs for both units. Model numbers
are a minimum. Links would be nice.

EDIT: Just to be clear, I hadn't seen post 3 when I posted this.
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Old 12-22-2017, 04:19 PM   #5
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Re: Cooktop and Oven Wiring


Quote:
Originally Posted by CodeMatters View Post
1) There's another active cooktop thread you may want to read
2) 3-wire to me means 2 hots + neutral + gnd. Is that what's meant here?
3) No real plans can be made without the specs for both units. Model numbers
are a minimum. Links would be nice.
1) Thank you, I saw a couple of the other threads where the separate cook top and oven are treated as a single unit based on their combined wattage. The wattage isn't listed on the unit or the installation PDF I hunted down. Since I haven't purchased the oven yet, I'll do that with a eye to the combined wattage.

2) There are 2 hots, 1 neutral and no ground. The dryer is wired the same way on a different circuit and I'm positive neither is a jury rigged installation.

3) The cook top is a Frigidaire FFEC3025LW1
FFEC3025LW1-FRIGIDAIRE-COOKTOP-manual

As I mentioned the oven hasn't been purchased yet so I'll need to stay within the wattage constraints if I don't want to run a second circuit.
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Old 12-22-2017, 04:31 PM   #6
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Re: Cooktop and Oven Wiring


Quote:
Originally Posted by NestaUlrich View Post

2) There are 2 hots, 1 neutral and no ground.
Being as I'm in Canada, this may not apply:
Any new appliance being wired needs to be done so to new code
requirements. Current code requires a separate gnd.
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Old 12-22-2017, 05:07 PM   #7
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Re: Cooktop and Oven Wiring


If the cable has a red, black and white insulated wires it is Romex and is non compliant.
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Old 12-22-2017, 05:09 PM   #8
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Re: Cooktop and Oven Wiring


Quote:
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If the cable has a red, black and white insulated wires it is Romex and is non compliant.
So new appliances require a new circuit? The circuit isn't grandfathered into code?
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Old 12-22-2017, 06:02 PM   #9
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Re: Cooktop and Oven Wiring


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If the cable has a red, black and white insulated wires it is Romex and is non compliant.
Don't you mean SE?

Romex, or nm (romex is a trade name- just saying you can have nm that is completely code compliant but not say "romex") has a bare ground.
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Old 12-22-2017, 07:26 PM   #10
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Re: Cooktop and Oven Wiring


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Don't you mean SE?

Romex, or nm (romex is a trade name- just saying you can have nm that is completely code compliant but not say "romex") has a bare ground.
SE cable has 2 insulated conductors and a concentric neutral wrapped around the 2 insulated conductors, that is not what the OP is describing.

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Old 12-22-2017, 07:27 PM   #11
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Re: Cooktop and Oven Wiring


Quote:
Originally Posted by rjniles View Post
SE cable has 2 insulated conductors and a concentric neutral wrapped around the 2 insulated conductors, that is not what the OP is describing.

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Old 12-24-2017, 06:34 AM   #12
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Re: Cooktop and Oven Wiring


I've seen many many dryers and ovens wired with red+black+white as 240V + ground in older homes. I wonder if that is what the OP has?
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Old 12-24-2017, 07:24 AM   #13
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Is one of the hots black with a red stripe or is it white?
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Old 12-24-2017, 08:00 AM   #14
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Re: Cooktop and Oven Wiring


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I've seen many many dryers and ovens wired with red+black+white as 240V + ground in older homes. I wonder if that is what the OP has?
A dryer or oven wired with red+black+white + ground Romex is a compliant 4 wire circuit. Romex with black, red and white and no ground is not complaint.
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Old 12-24-2017, 08:03 AM   #15
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Re: Cooktop and Oven Wiring


Currently there is a black, red, and white. There is no ground, neither bare copper, green wire, nor metal conduit. The dryer hookup is wired the same way.
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