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Re: [TowerTalk] RMC-1000 remote - what type of cable to run?

To: towertalk@contesting.com
Subject: Re: [TowerTalk] RMC-1000 remote - what type of cable to run?
From: Martin A Flynn <maflynn@theflynn.org>
Reply-to: maflynn@theflynn.org
Date: Thu, 06 Nov 2014 21:30:23 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On 11/6/2014 6:28 PM, Jim Brown wrote:
On Thu,11/6/2014 11:55 AM, Howard W6HDG wrote:
I then emailed him again and double checked that it could run in the same conduit with coax and rotor cables and he replied, "Yes, as I said, it would be off while transmissions/radio operation ".

Sorry, that's a wrong answer. If the cables carry 120VAC, they MUST NOT be in the same conduit with low voltage wiring. As I recall, the break point is something like 48V.

It's allowed by code:

300.3(C) Conductors of Different Systems.
(1) 600 Volts, Nominal, or Less. Conductors of circuits rated 600 volts, nominal, or less, ac circuits, and dc circuits shall be permitted to occupy the same equipment wiring enclosure, cable, or raceway. All conductors shall have an insulation rating equal to at least the maximum circuit voltage applied to any conductor within the enclosure, cable, or raceway.

Exception: For solar photovoltaic systems in accordance with 690.4(B).

FPN: See 725.55(A) for Class 2 and Class 3 circuit conductors.
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