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Posted by Michael Dobony on October 21, 2009, 11:27 pm
Is it normal to have some residual voltage, under 5 volts, between the
neutral and the ground? Voltage between hot and neutral and hot and ground
is 120v.
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Posted by Steve N. on October 22, 2009, 12:28 am
> Is it normal to have some residual voltage, under 5 volts, between the
> neutral and the ground? Voltage between hot and neutral and hot and ground
> is 120v.
Check out this Fluke article and see if it answers your questions:
http://support.fluke.com/find-sales/Download/Asset/1989076_6003_ENG_C_W.PDF
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Posted by terry on October 22, 2009, 3:18 am
> > Is it normal to have some residual voltage, under 5 volts, between the
> > neutral and the ground? Voltage between hot and neutral and hot and gro=
und
> > is 120v.
> Check out this Fluke article and see if it answers your questions:
> http://support.fluke.com/find-sales/Download/Asset/1989076_6003_ENG_C...
Insufficient info:
Is that with current flowing to something plugged into that
circuit????
Or is it with that circuit breaker off???
Because with even a cheap meter there can be small induced voltages
from other wires that are working, running parallel in the same area
etc. on even a so called dead or disconnected wire.
Also maybe on one side of a working Edison circuit!
Description of the situation; where and under what conditions the
voltage was measured etc. would help.
Five volt drop on a working circuit with something actually plugged in
and working (current flowing) does sound a little unusual, and might
suggest a high resistance connection somewhere to be investigated for
a faulty item..
However a 5 volt drop on a working circuit drawing say 10 amps
suggests a resistance of around 5/10 =3D 0.5 ohms which for 12 AWG is
approx 300 feet of single conductor copper. Is the conductor under
size or does the circuit go through a lot of duplex outlets etc.
before the point of measurement? Older backstab outlets are often
mentioned here. Not aluminum wiring perhaps? Hard to comment.
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Posted by DD_BobK on October 22, 2009, 12:17 pm
> > Is it normal to have some residual voltage, under 5 volts, between the
> > neutral and the ground? Voltage between hot and neutral and hot and gro=
und
> > is 120v.
> Check out this Fluke article and see if it answers your questions:
> http://support.fluke.com/find-sales/Download/Asset/1989076_6003_ENG_C...
Steve-
Help me here....I followed the link and was in the process of reading
it (and, of course, looking at the figures)
Is the figure properly annotated? the "hot-neutral reversed" figure
has two leads labeled as H.....
am I mis-reading it or what?
thanks
cheers
Bob
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Posted by Michael Dobony on October 22, 2009, 4:35 pm
On Wed, 21 Oct 2009 23:28:43 -0500, Steve N. wrote:
>> Is it normal to have some residual voltage, under 5 volts, between the
>> neutral and the ground? Voltage between hot and neutral and hot and ground
>> is 120v.
>
> Check out this Fluke article and see if it answers your questions:
>
> http://support.fluke.com/find-sales/Download/Asset/1989076_6003_ENG_C_W.PDF
Yup. The 3v max is right about what it is at, as I recall. The needle
moved, but not to a full 5v. It appears to be within normal.
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> neutral and the ground? Voltage between hot and neutral and hot and ground
> is 120v.