Help! The boss wants her cooktop back!

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Old 02-12-10, 06:41 AM
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Help! The boss wants her cooktop back!

I had a licensed electrician convert a 220 electric cooktop to 110 for gas about a year ago. Everything works fine. I recently had new countertops installed and the installers unhooked the hard wiring before I had a chance to label the wires. Since I didn't unhook the wires, I don't know which ones to re-connect.

The conduit is three wire (red, black, and white) with no ground. The wires coming from the gas cooktop cord are two black and a green ground. The breaker is a single pole 15amp 110. I've tested the wires and only the black is hot. Sooo....what goes to what?

I can also, if necessary, pull the breaker panel and look to see what's running into the breaker.

Thanks!
 
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Old 02-12-10, 07:50 AM
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With a 120 volt circuit only the black would be hot. Are the cooktop wires labeled in any way? Is this the same cooktop that was installed before?
 
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Old 02-12-10, 08:04 AM
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Is the red wire connected to a circuit breaker inside the panel?
 
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Old 02-12-10, 12:28 PM
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The black wire is running into the breaker. The red and white are running into the ground bar.

Also, there appears to be no distinguishing between the black wires coming from the cook top. It's the same one I had in before.
 
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Old 02-12-10, 01:19 PM
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Why did the countertop installers not hook this back up?
 
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Old 02-12-10, 01:23 PM
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Great question

They claim to have no skill or insurance for electrical work.
 
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Old 02-12-10, 01:28 PM
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What is the make and model of the cook top? Most likely both black wires need to be powered and as long the circuit breaker can handle the load you are ok.
 
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Old 02-12-10, 01:35 PM
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The red and white are running into the ground bar.
Running a red to the ground/neutral bar was never legal. I suspect the red was used as ground. Again never legal at this wire size.
I had a licensed electrician convert a 220 electric cooktop to 110
Well I suggest next time get a different electrician.

Is the conduit metal? Is the cook top 240v or is it 120/240v? If the conduit is metal and the cooktop is 240v only you can use the wiring you have. If the conduit is not metal you will need to pull a ground.

We can give more detailed information when we know if your cooktop is 240 or 120/240 and if the conduit is metal. Also we need to verify the wire size and manufacturer’s recommended breaker size or max amp draw.
 
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Old 02-12-10, 02:44 PM
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The OP said this is now a gas cooktop so I doubt he needs 240 anymore.
 
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Old 02-12-10, 02:54 PM
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Originally Posted by pcboss View Post
The OP said this is now a gas cooktop so I doubt he needs 240 anymore.
OOPS I read it as wanting to put back the original 240 cooktop and remove the gas cook top. Sorry for the miss-read.

I though stand by my assertion the red should never have been attached to the neutral bar and if the conduit and box aren't metal the wiring can't be done code compliant.
 
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