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Old 03-01-2009, 06:51 PM   #1
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Connecting hot water heater


I'm located in Canada but I do not think that maters much in this case.

I'm DIY'ing my 1st hot water heater. The old hot water heater is GAS while the new one is electric. I'm taking my time since the old hot water heater has not failed yet.

The electric tank is 4500W. I bought and ran 10.2bx cable and i'm going to connect it to a double pole 30a breaker.

After I ran the cable, I noticed that the heater wires are 12 gauge. Is it a problem to connect the 10.2 to the 12 gauge wire?

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Old 03-01-2009, 07:04 PM   #2
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Connecting hot water heater


If the conductors are from factory no it will not be a issue with it.

It kinda common to see that due the factory conductors have diffrent tempture rating than the standard building conductors are.

Merci,Marc

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Old 03-01-2009, 08:51 PM   #3
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Connecting hot water heater


Quote:
Originally Posted by unixb0y View Post
The electric tank is 4500W. I bought and ran 10.2bx cable and i'm going to connect it to a double pole 30a breaker.

After I ran the cable, I noticed that the heater wires are 12 gauge. Is it a problem to connect the 10.2 to the 12 gauge wire?
4500/240 = 19 Canadian Amps?
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Old 03-01-2009, 09:01 PM   #4
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Connecting hot water heater


Quote:
Originally Posted by unixb0y View Post
I'm located in Canada but I do not think that maters much in this case.

I'm DIY'ing my 1st hot water heater. The old hot water heater is GAS while the new one is electric. I'm taking my time since the old hot water heater has not failed yet.

The electric tank is 4500W. I bought and ran 10.2bx cable and i'm going to connect it to a double pole 30a breaker.

After I ran the cable, I noticed that the heater wires are 12 gauge. Is it a problem to connect the 10.2 to the 12 gauge wire?
To confirm Frenchelectrician, the insulation value on the HWT wiring allows you to connect the 30 amp 10AWG circuit to the HWT.
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Old 03-01-2009, 10:29 PM   #5
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Connecting hot water heater


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4500/240 = 19 Canadian Amps?
The tank manual sugests a 25amp double pole breaker. I was only able to find a 30 amp double pole for my pannel
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Old 03-01-2009, 10:35 PM   #6
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Connecting hot water heater


The min size is 25 amp breaker but use the 30 amp breaker is far more common to do that.

Unless you can order that size it will cost more than the common size breaker what most big box store will stock them in there.

Merci,Marc

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