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Re: shielding low voltage wire, running low voltage wires aside 12-2 romex
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> Thanks for the tips. I've been trying to maintain separation in all =
cases but as several mentioned, it's nearly impossible in an older (late =
1800's) home to do this in all cases. 12" of separation sounds =
ridiculous especially when studs are often 16" or less on center. You =
can only drill so many holes before you are doing more structural damage =
than necessary. I thought about testing it by wrapping some low voltage =
wire around some hot romex and testing throughput on the low voltage. =
Has this been done and published before?
John,
Sorry you got treated to the abusive post from my stalker. Perhaps I =
should have been more clear when I said it's OK to run close and =
parallel for a few feet. By that I meant closer than one foot -- not =
closer than 2 inches.
To recap, do not run high and low voltage services next to each other. =
Keep them as far apart as you can for optimum performance. You don't =
need lots of holes, but you can not run low and high voltage cables =
through the same holes. That's a no-no (code to some; law to others; =
call it what you like but don't do it).
The test you're considering probably won't tell you what will happen =
long term if you run low voltage cables next to high voltage runs. =
Everything may appear just fine at first but give problems later. For =
example, I installed a security system in an older home in CT years ago. =
Some time later an someone else ran new 110VAC cables right next to one =
of my keypad (data) runs. Every so often one of the keypads would =
operate erratically. It didn't start happening immediately and it =
wasn't all the time either.
On the first call I simply swapped out the pad, checked to see if it was =
OK and left. Shortly thereafter I got a call that the system was still =
having problems. The panel seemed OK because the other keypads were =
working. Upon investigation I found the new Romex cable lying =
practically on top of my data cable. I moved my cable over a couple of =
feet and the problem was solved.
I've also serviced numerous systems which we took over from competitors =
who couldn't fix problems. If the client mentioned keypads not =
responding or giving wrong indications, we'd disconnect the data cables =
and meter them. On a fair number of occasions we found AC voltage being =
inducted into the security system cables. Almost invariably rerouting a =
few cables solved the problems.
I've wired quite a few older homes, John. One of them originally =
belonged to Sebastian Shallus, brother of Jacob Shallus. History buffs =
will tell you how old that house is. It was moved a number of years ago =
to North Canton, Connecticut. If you need help figuring ways to wire an =
older home I'd be glad to share some techniques with you. I promise not =
to suggest anything that will weaken the structure. Call when you have =
some time (my phone is in my sig line) and I'll try to help.
--=20
Regards,
Robert L Bass
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D>
Bass Home Electronics
4883 Fallcrest Circle
Sarasota =B7 Florida =B7 34233
http://www.bassburglaralarms.com
Sales & Tech Support 941-925-8650
Customer Service 941-232-0791
Fax 941-870-3252
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D>
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<DIV><FONT size=3D2>> Thanks for the tips. I've been trying to =
maintain=20
separation in all cases but as several mentioned, it's nearly =
impossible in=20
an older (late 1800's) home to do this in all cases. 12" of=20
separation sounds ridiculous especially when studs are often 16" or =
less on=20
center. You can only drill so many holes before you are doing =
more=20
structural damage than necessary. I thought about testing it =
by=20
wrapping some low voltage wire around some hot romex and testing =
throughput=20
on the low voltage. Has this been done and published=20
before?</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>John,</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>Sorry you got treated to the abusive post from my=20
stalker. Perhaps I should have been more clear when I said it's OK =
to run=20
close and parallel for a few feet. By that I meant closer than one =
foot --=20
not closer than 2 inches.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>To recap, do not run high and low voltage=20
services next to each other. Keep them as far apart as you =
can for=20
optimum performance. You don't need lots of holes, but you can not =
run low=20
and high voltage cables through the same holes. That's a no-no =
(code to=20
some; law to others; call it what you like but don't do =
it).</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>The test you're considering probably won't tell you =
what will=20
happen long term if you run low voltage cables next to high voltage =
runs. =20
Everything may appear just fine at first but give problems later. =
For=20
example, I installed a security system in an older home in CT years =
ago. =20
Some time later an someone else ran new 110VAC cables right next to one =
of my=20
keypad (data) runs. Every so often one of the keypads would =
operate=20
erratically. It didn't start happening immediately and it wasn't =
all the=20
time either.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>On the first call I simply swapped out the pad, =
checked to see=20
if it was OK and left. Shortly thereafter I got a call that the =
system was=20
still having problems. The panel seemed OK because the other =
keypads were=20
working. Upon investigation I found the new Romex cable lying =
practically=20
on top of my data cable. I moved my cable over a couple of feet =
and the=20
problem was solved.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>I've also serviced numerous systems which =
we took over=20
from competitors who couldn't fix problems. If the client =
mentioned=20
keypads not responding or giving wrong indications, we'd disconnect the =
data=20
cables and meter them. On a fair number of occasions we found AC =
voltage=20
being inducted into the security system cables. Almost invariably=20
rerouting a few cables solved the problems.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>I've wired quite a few older homes, John. One =
of them=20
originally belonged to Sebastian Shallus, brother of Jacob =
Shallus. =20
History buffs will tell you how old that house is. It was moved a =
number=20
of years ago to North Canton, Connecticut. If you need help =
figuring ways=20
to wire an older home I'd be glad to share some techniques with =
you. I=20
promise not to suggest anything that will weaken the structure. =
Call when=20
you have some time (my phone is in my sig line) and I'll try to=20
help.</FONT></DIV>
<DIV><FONT size=3D2></FONT><FONT size=3D2></FONT><BR><FONT size=3D2>-- =
</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>Regards,<BR>Robert L Bass</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT =
size=3D2>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D><BR>Bass Home=20
Electronics<BR>4883 Fallcrest Circle<BR>Sarasota =B7 Florida =B7 =
34233<BR></FONT><A=20
href=3D"http://www.bassburglaralarms.com";><FONT=20
size=3D2>http://www.bassburglaralarms.com</FONT></A><BR><FONT =
size=3D2>Sales &=20
Tech Support 941-925-8650<BR>Customer Service 941-232-0791<BR>Fax=20
941-870-3252<BR>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D></FONT></DIV></BODY></HTML>
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