On 8/7/20 3:29 PM, john nistico wrote:
You should never run line voltage in the same conduit or within 3 feet of lines
unless the insulation voltage ratings are rated for the same voltage. This is
as per the national electric code.
yes and no - If you ran romex in the conduit, you've got two layers of
insulation. Is that the "permanent barrier" required by the code? Maybe?
And of course, the rotator and relay could be run with 300V insulation,
just like the line voltage, and then you'd also be ok (although
technically, you might need one of those funky boxes with a partition
across the middle)
Quite a bit of Cat 5 wire is rated at much higher voltages than 300V.
Commscope 5nf5 flooded outdoor direct burial cat 5 cable is rated at
1500VAC/2500DC
That roll of sprinkler control cable in the discount bin at Lowe's,
maybe not.
There's also a lot of online code lawyers out there arguing about
whether the exception below means the entire low voltage circuit has to
be wired with Class 1 practices or just the part in the conduit. This
is a "consult Authority Having Jurisdiction" .
Or, claim it's a temporary installation with an extension cord in the
pipe underground, not permanently connected, and therefore not subject
to the NEC, any more than the extension cord running your holiday lighting.
it really boils down to "is it safe?"
Check out exception 1, (1):
800.133 2) Other Applications. Communications wires and cables shall be
separated at least 50 mm (2 in.) from conductors of any electric light,
power, Class 1, non–power-limited fire alarm, or medium-power
network-powered broadband communications circuits.
Exception No. 1: Where either (1) all of the conductors of the electric
light, power, Class 1, non–power-limited fire alarm, and medium-power
network-powered broadband communications circuits are in a raceway or in
metal-sheathed, metal-clad, nonmetallic-sheathed, Type AC, or Type UF
cables, or (2) all of the conductors of communications circuits are
encased in raceway.
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