Shielding conduits
On Jul 28, 8:18*pm, wrote:
On 28 Jul 2009 19:54:03 GMT, (DA)
wrote:
by NEC (assuming you are in the USA) you are
actually required to keep 6" distance between power and signal
Cite that
You now you could word that request a little more politely. The
actual separation as required by the NEC is two inches.
"800.52 Installation of Communications Wires, Cables, and Equipment.
Communications wires and cables from the protector to the equipment
or, where no protector is required, communications wires and cables
attached to the outside or inside of the building shall comply with
800.52(A) through (E).
(A) Separation from Other Conductors.
(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.
Exception No. 2: Where the communications wires and cables are
permanently separated from the conductors of electric light, power,
Class 1, non–power-limited fire alarm, and medium power network-
powered broadband communications circuits by a continuous and firmly
fixed nonconductor, such as porcelain tubes or flexible tubing, in
addition to the insulation on the wire."
--
Tom Horne
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