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Wall oven electrical requirements (Toronto)

Posted: Sun Jan 13, 2019 1:41 pm
by broddo
Hi All,

I'm planning my kitchen Reno at the moment. I'm aiming for a wall oven and a separate induction cooktop.The cooktop requirements are pretty straight forward - 8/3 wire ( ~25ft to the breaker), 40A, 240V dedicated circuit.

The wall oven isn't as clear. E.g if you look at Ikea's NUTID ovens, the instructions say to use a 20A breaker and 12/3 wire. (They don't mention what the maximum wattage is). I would have assumed that an oven would require more than this.

What do you think? Should I go with the 12/3 20A or should I accept the cost and go with a larger gauge cable.

Re: Wall oven electrical requirements (Toronto)

Posted: Sun Jan 13, 2019 1:53 pm
by Aaron
That's odd. As far as I know, ovens have the same requirement as cooktops. I think my dad's wall oven up at the lake uses 40A with 8/3, but I'm not 100% sure.

I suppose you could use 8/3 anyway, with a 20A breaker? You'd have the wire installed in case some other wall oven in the future would require it...

Re: Wall oven electrical requirements (Toronto)

Posted: Sun Jan 13, 2019 6:34 pm
by emtnut
broddo wrote:
Sun Jan 13, 2019 1:41 pm

The wall oven isn't as clear. E.g if you look at Ikea's NUTID ovens, the instructions say to use a 20A breaker and 12/3 wire. (They don't mention what the maximum wattage is). I would have assumed that an oven would require more than this.
What do you think? Should I go with the 12/3 20A or should I accept the cost and go with a larger gauge cable.
Hard to answer. I looked at the IKEA site, and they have 4 'NUTID' ovens.
Installation manuals (that I could find) say nothing for electrical.
I would recommend going to the store, and look at the model you are purchasing. Open the oven door, and you should see the nameplate there.

I went through this a few years ago when doing my sisters kitchen.
IKEA was no help at all, and I waited until the oven arrived to size the circuit.

Re: Wall oven electrical requirements (Toronto)

Posted: Mon Jan 14, 2019 7:47 am
by broddo
I like the idea of installing 8/3 wire (despite the extra cost) with a 20A breaker even if it is over kill - like Aaron says, at least I'd have it if later on I installed an oven with higher requirements.

Emtnut: I didn't think to look at the nameplates when I was there last but that's a good idea! The manuals are pretty useless but here's a link to the one that mentioned the electrical requirements. Its listed at the bottom of page 2. This is what threw me - I assumed I'd have to install 8/3 wire anyway, but when I saw this it made me think that perhaps the requirements for separate wall ovens were much lighter than those for a full range.

https://www.ikea.com/ca/en/assembly_ins ... -4_pub.pdf

Re: Wall oven electrical requirements (Toronto)

Posted: Mon Jan 14, 2019 10:43 am
by emtnut
broddo wrote:
Mon Jan 14, 2019 7:47 am
I like the idea of installing 8/3 wire (despite the extra cost) with a 20A breaker even if it is over kill - like Aaron says, at least I'd have it if later on I installed an oven with higher requirements.

Emtnut: I didn't think to look at the nameplates when I was there last but that's a good idea! The manuals are pretty useless but here's a link to the one that mentioned the electrical requirements. Its listed at the bottom of page 2. This is what threw me - I assumed I'd have to install 8/3 wire anyway, but when I saw this it made me think that perhaps the requirements for separate wall ovens were much lighter than those for a full range.

https://www.ikea.com/ca/en/assembly_ins ... -4_pub.pdf
A lot of these ranges are 20A circuits, some are 30A as well. I've seen some of the double ranges that ask for a 40A circuit.

To future proof, I'd think a 30A circuit with 10/3 should be good. **edit** Unless you think a double oven may be in your future ! **
When you see the nameplate, install either the 20A or 30A breaker as req'd.


I've seen a couple of induction cooktops that ask for a 50A circuit!
I've 'heard' that some of the high end ones are 60A ... Haven't seen one myself thou. That's ALOT of cooking power !! :shock:

Re: Wall oven electrical requirements (Toronto)

Posted: Tue Jan 15, 2019 6:30 pm
by broddo
emtnut wrote:
Mon Jan 14, 2019 10:43 am
A lot of these ranges are 20A circuits, some are 30A as well. I've seen some of the double ranges that ask for a 40A circuit.

To future proof, I'd think a 30A circuit with 10/3 should be good. **edit** Unless you think a double oven may be in your future ! **
When you see the nameplate, install either the 20A or 30A breaker as req'd.


I've seen a couple of induction cooktops that ask for a 50A circuit!
I've 'heard' that some of the high end ones are 60A ... Haven't seen one myself thou. That's ALOT of cooking power !! :shock:
I think I've talked my wife out of ever getting a double oven - so 10/3 might just cut it. Thanks for the advice!

I had heard that some induction cooktops could require a 50A circuit - some even stating that you'll void the warranty if you supply anything lower (who would be running 4 or 5 burners on max at any one time?) I've worked with 6/3 wire recently and its a PITA (and costs a pretty penny). I'll do a bit of Googling before I run any wires to make sure that I won't need anything less than 8/3 for the cooktop. I definitely don't want to have to take this all apart again!