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Sci.Electronics.Basics -> Electric home heat system?
There are 5 messages in this thread.
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Author: ButterDate: 14:20 10-05-08
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A guy I work with kept complaining that his breakers were tripping. I
went over and put an amp meter each of the two circuits providing
power to his electric heat in his house. I had first measured the OHms
in ea circuit. When first turned on the amp value in ea was where I
expected it to be about 3 amps. After a few minutes each had jumped to
about 20 and then a few minutes to 40 and finally to 65 which tripped
the breakers.
He didn't want to take some wall down to get at the heating unit then
so I'm wondering what is involved in a home electric heating system.
Breakers, wire, switch, thermostate and resistence wire. Is there any
more to it?
I rarely have internet acess and then only limited time and didn't
find anything useful on the internet.Any ideas?
Rosco
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Author: Bob EldDate: 19:27 10-05-08
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"Butter" <clannorm@yahoo.com> wrote in message
news:0228ddc7-48d4-42b4-8d97-611f0bac6bca@8g2000hse.googlegroups.com...
> A guy I work with kept complaining that his breakers were tripping. I
> went over and put an amp meter each of the two circuits providing
> power to his electric heat in his house. I had first measured the OHms
> in ea circuit. When first turned on the amp value in ea was where I
> expected it to be about 3 amps. After a few minutes each had jumped to
> about 20 and then a few minutes to 40 and finally to 65 which tripped
> the breakers.
> He didn't want to take some wall down to get at the heating unit then
> so I'm wondering what is involved in a home electric heating system.
> Breakers, wire, switch, thermostate and resistence wire. Is there any
> more to it?
> I rarely have internet acess and then only limited time and didn't
> find anything useful on the internet.Any ideas?
> Rosco
He needs to get a licensed electrician on it before he burns down his house.
Don't even try to fix it, you'll negate his insurance if there is a
fire....Stay Away!
There has to be some kind of physical short in the system that comes into
play as it heats up. Normal resistance wire increases in resistance (lower
current) when hot which is the opposite of what you describe.
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Author: sparkyDate: 21:15 10-05-08
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On May 10, 2:20=A0pm, Butter <clann...@yahoo.com> wrote:
> =A0A guy I work with kept complaining that his breakers were tripping. I
> went over and put an amp meter each of the two circuits providing
> power to his electric heat in his house. I had first measured the OHms
> in ea circuit. When first turned on the amp value in ea was where I
> expected it to be about 3 amps. After a few minutes each had jumped to
> about 20 and then a few minutes to 40 and finally to 65 which tripped
> the breakers.
> =A0He didn't want to take some wall down to get at the heating unit then
> so I'm wondering what is involved in a home electric heating system.
> Breakers, wire, switch, thermostate and resistence wire. Is there any
> more to it?
> =A0I rarely have internet acess and then only limited time and didn't
> find anything useful on the internet.Any ideas?
> Rosco
Is this an electric forced air system? What size is the breaker that
is tripping?
What you are describing is normal for a forced air system with the
current
increasing in steps as the sequencer operates.
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Author: ButterDate: 17:46 15-05-08
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On May 10, 8:15=A0pm, sparky <sparky...@yahoo.com> wrote:
> On May 10, 2:20=A0pm, Butter <clann...@yahoo.com> wrote:
>
> > =A0A guy I work with kept complaining that his breakers were tripping. I=
> > went over and put an amp meter each of the two circuits providing
> > power to his electric heat in his house. I had first measured the OHms
> > in ea circuit. When first turned on the amp value in ea was where I
> > expected it to be about 3 amps. After a few minutes each had jumped to
> > about 20 and then a few minutes to 40 and finally to 65 which tripped
> > the breakers.
> > =A0He didn't want to take some wall down to get at the heating unit then=
> > so I'm wondering what is involved in a home electric heating system.
> > Breakers, wire, switch, thermostate and resistence wire. Is there any
> > more to it?
> > =A0I rarely have internet acess and then only limited time and didn't
> > find anything useful on the internet.Any ideas?
> > Rosco
>
> Is this an electric forced air system? =A0 What size is the breaker that
> is tripping?
>
> What you are describing is normal for a forced air system with the
> current
> increasing in steps as the sequencer operates.
Yes its forced air. The breakers were I think 20 amp or maybe 30. It
was going in steps but the last step was around 65 I think. He has it
off now and seems to be in no hurry since its warm down here. I never
heard of a sequencer for these things. I just assumed it cycled on and
off.
Thanks --I don't get on here to often to check things
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Author: sparkyDate: 21:49 15-05-08
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On May 15, 5:46=A0pm, Butter <clann...@yahoo.com> wrote:
> On May 10, 8:15=A0pm, sparky <sparky...@yahoo.com> wrote:
>
>
>
>
>
> > On May 10, 2:20=A0pm, Butter <clann...@yahoo.com> wrote:
>
> > > =A0A guy I work with kept complaining that his breakers were tripping.=
I
> > > went over and put an amp meter each of the two circuits providing
> > > power to his electric heat in his house. I had first measured the OHms=
> > > in ea circuit. When first turned on the amp value in ea was where I
> > > expected it to be about 3 amps. After a few minutes each had jumped to=
> > > about 20 and then a few minutes to 40 and finally to 65 which tripped
> > > the breakers.
> > > =A0He didn't want to take some wall down to get at the heating unit th=
en
> > > so I'm wondering what is involved in a home electric heating system.
> > > Breakers, wire, switch, thermostate and resistence wire. Is there any
> > > more to it?
> > > =A0I rarely have internet acess and then only limited time and didn't
> > > find anything useful on the internet.Any ideas?
> > > Rosco
>
> > Is this an electric forced air system? =A0 What size is the breaker that=
> > is tripping?
>
> > What you are describing is normal for a forced air system with the
> > current
> > increasing in steps as the sequencer operates.
>
> Yes its forced air. The breakers were I think 20 amp or maybe 30. It
> was going in steps but the last step was around 65 I think. He has it
> off now and seems to be in no hurry since its warm down here. =A0I never
> heard of a sequencer for these things. I just assumed it cycled on and
> off.
> Thanks --I don't get on here to often to check things- Hide quoted text -
>
> - Show quoted text -
My home is heated with a 15 KW electric forced air system. it has a
100 amp
feed to the heating system and a sequencer that turns the elements on
in 5KW steps. If your unit is something similar 65 amps would be
about
right for the operating current.
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