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Electric baseboard heating problem Gm1234 12-31-2006
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Posted by RBM on December 31, 2006, 5:15 pm


Assuming the heater is 240 volt, it appears that either you do have one bad
fuse in the circuit, or the two feed wires were inadvertently wired to the
same leg in your panel. Find the origin of this circuit in the panel and
determine that you have 240 volts on the load side of the two fuses that
feed the circuit



> We have a bedroom in attic that we seldom use. But with holiday
> houseguests
> it is getting use. But, the electric baseboard heater is not working.
>
> We have fuse panels. This particular room's heating is not identified, but
> perhaps it shares a circuit with another heater? Anyway, I removed all
> fuses
> and checked each one. No bad fuses.
>
> The heater is controlled by a wall thermostat - It has white and black
> wires
> coming to it - The thermostat breaks the white wire only, the black wire
> really just passes through. I checked voltages - nothing across the white
> &
> black on either side of the thermostat. But from either black or white to
> ground (the box), I get 110v. Just is case, I changed out the thermostat
> for
> a spare, but no change.
>
> At heater, it is the same - no voltage between the incoming wires, but
> 110v
> to ground from either side.
>
> Questions:
> - If I see 110v to ground from black & white, why don't I see 220V across
> these conductors?
> - If I see the 110v to ground, does that mean that I do have power to the
> heater?
>
> Any suggestions as to how to further troubleshoot this problem?
>
> Graham
> Ontario, Canada
>
>
>
>



Posted by mm on December 31, 2006, 7:18 pm


wrote:

>We have a bedroom in attic that we seldom use. But with holiday houseguests
>it is getting use. But, the electric baseboard heater is not working.

Is this a permanent 220v installation, or a baseboard style space
heater?
>

Posted by mm on December 31, 2006, 7:19 pm


wrote:

>We have a bedroom in attic that we seldom use. But with holiday houseguests
>it is getting use. But, the electric baseboard heater is not working.

BTW, has it ever worked? How long have you lived there?

Posted by Gm1234 on December 31, 2006, 8:56 pm



"mm" wrote >
> >We have a bedroom in attic that we seldom use. But with holiday
houseguests
> >it is getting use. But, the electric baseboard heater is not working.
>
> BTW, has it ever worked? How long have you lived there?

Good Question! and the answer is YES it has always worked in the past, but
we had not checked it this winter until now.

This should answer most of the suggestions (I appreciate them!) - We have
lived here for 30+ years - The panel has not been modified during that time
nor the bedroom's wiring.

I understand how the voltages would be as measured if somehow both hots were
being fed from same phase - But at a loss to know how this could be.

We did have some bathroom rewiring done this past summer, but it should not
affect this area. But you never know!

Graham



Posted by mm on December 31, 2006, 11:53 pm


wrote:

>
>"mm" wrote >
>> >We have a bedroom in attic that we seldom use. But with holiday
>houseguests
>> >it is getting use. But, the electric baseboard heater is not working.
>>
>> BTW, has it ever worked? How long have you lived there?
>
>Good Question! and the answer is YES it has always worked in the past, but
>we had not checked it this winter until now.

Hard to believe it used to be connected to the right phase, and it
moved during the summer.
>
>This should answer most of the suggestions (I appreciate them!) - We have
>lived here for 30+ years - The panel has not been modified during that time
>nor the bedroom's wiring.
>
>I understand how the voltages would be as measured if somehow both hots were
>being fed from same phase - But at a loss to know how this could be.
>
>We did have some bathroom rewiring done this past summer, but it should not
>affect this area. But you never know!

That is undoubtedly the reason. How, I have no idea.

You didn't answer my previous post. Is it permanent heating or space
heating? More importantly, do you know that it is 220, or might it be
110?

If it were 110 and the heat is on, but the white is broken some place
between the thermostat and the fusebox, then you would get 110 at both
the whiite and black between ground, but 0 between white and black.

Although white is usually neutral and at ground potential, when the
white wire is broken, the 110 potential will flow from the black
through the appliance to the portion of white closer to the appliance.
It's all at the same voltage when there is no current flow.

Come to think of it, this would all be true with 220 also. In 220
only 110 comes from each conductor. Maybe the fuse or breaker, or
wire, for white or black, is blown, tripped, or broken. That would
account for your symptoms.

>Graham
>


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