wiring color question

[smhaff]

I need to know the basics about color coding of household wiring. My home was built in early 60's, '63 I believe. I'm connecting a cooktop to a junction box. In the box (the house wiring) I have 3 copper lines, black, white, and red which matched the wires of the old cooktop exactly. My new cooktop has red, black and green. Which wires connect to which? Is the green to connect to white and the other colors the same?

Thanks for any help.

Steve

[Anonymous]

My new cooktop has red, black and green.

Hi,

The newer cooktops are all 220-240 volts AC, the white wire is no longer used in newer cooktops as that was used for 110-120 volt AC stuff like lights in the old cooktop.

The black to black, the red to red....and up here with me ( Canada ) we are not suppose to attach the white and ground ( bare/green ) together. Tape/cap off the old white wire, look for the ground/bare/green attached in old wire box, might be under a screwhead...attach the ground/bare/green from the new cooktop to the ground screw in the mounting box.

Have a peek in the instructions that come with the new cooktop, they often have lots of info and examples.

jeff.[/b]

[jeff1]

Ooop...I forgot to login...I came up as a Guest...

jeff.

[Wgoodrich]

Jeff, You are correct to an extent. However the CEC and the NEC differ when it comes to range wiring. The NEC accepts existing as long as the existing branch circuit is an SE cable or is a Romex with a black red white wire. Then the white wire may be used as a combined neutral and grounding wire if your range as you said has both 240 volt and 120 volt components.

The CEC does not recognize existing concerning ranges and requires a new branch circuit.

In this case however we are talking about a cook top as you said does not use a neutral because there is not 120 volt components.

If this existing j-box has an equipment grounidng conductor that is bare or green then you are correct connect black to black and red to red and green to green or bare.

Problem is some wires on existing branch circuits for cooking units used the white wire as a combined grounded and grounding.

smhaff, tell us if you don't have the bare or green wire with your existing branch circuit. Then we can suggest how you can reidentify that white wire as a green wire.

Jeff, I was not disagreeing with you just trying to point out this is one condition that the CEC and the NEC do not say the same. The NEC recognized existing under certain circumstances on cooking equipment. YOu Canadian Code to my understanding requires a new branch circuit and does not recognize existing.

Welcome Jeff hope to see more replies from you. YOu did good.

Wg

[jeff1]

YOu did good.



Except forgot to Login.... Hee Hee :roll:

We usually always have to seperate the white and ground on the cooktop and B I Ovens that come up to us from the USA, they come attached and we seperate them and treat them as two seperate wires/systems....but we all know they are really -close- to the same thing.

jeff.

[Wgoodrich]

Jeff when you get ready to log in look to the area where you click and you should see a block that says auto log in. This will auto log you on our site when you enter the forum. That way you won't have to worry about logging on each time.

Hope this helps

Wg