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Home > Archive > Home Automation > June 2005 > Possible For Floating House Wire To Pick Up Low Volt. Via Inductive Coupling, Or... ?
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| Author |
Possible For Floating House Wire To Pick Up Low Volt. Via Inductive Coupling, Or... ?
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| Robert11 2005-06-16, 2:17 pm |
| Hello:
Have a length of 3 conductor (and Gnd. wire) No. 14 AWG running around my
house.
Would like to use the red, third conductor, to interconnect some wired-in
smoke
alarms.
This red wire is at present, to the best of my knowlege, totally floating.
Believe that there is nothing hooked to it now.
(but, it is hard to trace totally, and there might possibly be "something"
connected to it that I am unaware of ?)
Anyway, my question is:
Assuming that it really is totally floating, how likely, or possible, would
it be
for this wire to pick up, e.g. 2 V AC, via inductive coupling, RFI, or... ?
I ask this because I measure 2 V AC on it (relative to the white neutral),
which I cannot account for.
Thanks,
B.
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| Robert L. Bass 2005-06-16, 2:17 pm |
| If there is AC current in the other conductors of the same cable, I would be
surprised if there *wasn't* some inducted AC in the red lead. This is quite
normal.
--
Regards,
Robert L Bass
=============================>
Bass Home Electronics
2291 Pine View Circle
Sarasota · Florida · 34231
877-722-8900 Sales & Tech Support
http://www.bassburglaralarms.com
=============================>
"Robert11" <rgsrose@notme.com> wrote in message
news:L_adnarsvN0a-vTfRVn-ug@comcast.com...
quote:
> Hello:
>
> Have a length of 3 conductor (and Gnd. wire) No. 14 AWG running around my
> house.
> Would like to use the red, third conductor, to interconnect some wired-in
> smoke
> alarms.
>
> This red wire is at present, to the best of my knowlege, totally floating.
> Believe that there is nothing hooked to it now.
>
> (but, it is hard to trace totally, and there might possibly be "something"
> connected to it that I am unaware of ?)
>
> Anyway, my question is:
>
> Assuming that it really is totally floating, how likely, or possible,
> would it be
> for this wire to pick up, e.g. 2 V AC, via inductive coupling, RFI, or...
> ?
>
> I ask this because I measure 2 V AC on it (relative to the white neutral),
> which I cannot account for.
>
> Thanks,
> B.
>
>
>
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