The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Page 1 of 2 1 2 >
Topic Options
Rate This Topic
#114733 - 06/20/03 02:26 PM PoleCat-5
Webmaster Offline

Administrator
Member

Registered: 10/07/00
Posts: 3151
Loc: NY, USA
 Quote:
The security company installing cameras on these light poles claim that this is OK, however, I don't agree. Do you?

(BTW, this method has passed inspection in several different jurisdictions)
...S

(Electure)

Top
Tools for Electricians:
#114734 - 06/20/03 04:28 PM Re: PoleCat-5
Trumpy Offline


Member

Registered: 07/05/02
Posts: 8548
Loc: SI,New Zealand
Electure,
Is that Cat-5 wire hooked up to them 120V wires?.
I would condemn anything I saw like this!.
_________________________
Let's face it, these days if you're not young, you're old - Red Green grin

Top
#114735 - 06/20/03 06:41 PM Re: PoleCat-5
NJwirenut Offline
Member

Registered: 09/15/01
Posts: 816
Loc: Bergen County, NJ
Is the Cat5 connected to the power wiring, or just spliced with wirenuts?

Top
#114736 - 06/20/03 10:27 PM Re: PoleCat-5
Bjarney Offline
Moderator

Registered: 04/10/02
Posts: 2561
Loc: West-Southern Inner-Northeast ...
If the column is considered a raceway, wireway, junction or pull box, them the cat-fivers ought to be busted! Codes seem fairly unambiguous on that.

Top
#114737 - 06/20/03 10:48 PM Re: PoleCat-5
Trumpy Offline


Member

Registered: 07/05/02
Posts: 8548
Loc: SI,New Zealand
I was under the impression that different services had to be segregated!.
Over here in NZ, you are not allowed to run a Cat5 wire within 50mm(2") of any mains cable.
How is it in the US?.
_________________________
Let's face it, these days if you're not young, you're old - Red Green grin

Top
#114738 - 06/21/03 11:54 AM Re: PoleCat-5
JCooper Offline
Member

Registered: 12/30/02
Posts: 229
Loc: Kendall Park, NJ USA
As an installer for security systems, CCTV included, this is more common than you think. I have never installed LV cables inside a lamp post myself but I have done plenty service calls where they run some THWN inside the pole up to an external transformer for the camera power and in the same pole run the coax and any communications to the camera. The right way to do it is to run the electric up the outside of the pole in conduit and the coax and data wires inside the pole, less conduit fill issues with THWN than four coax cables and a couple comm cables. I have also seen poles that had two raceways inside them, or a divider up the center to avoid these situations.

Jim

Top
#114739 - 06/21/03 12:11 PM Re: PoleCat-5
maintenanceguy Offline
Member

Registered: 12/02/01
Posts: 303
Loc: Southern NJ, USA
I just installed two video cameras on the top of light poles just like this one.

One was right next to the front door and we did not want to have exposed conduit on the pole because it looks too "industrial". So we put a box on the bottom of the pole, one at the top near the camera, and ran greenfield up the inside of the pole with a 90 on each end which terminated in the boxes.

The coax and LV went inside the greenfield.

On the other pole, out in the parking lot, we just ran PVC conduit up the outside.

Top
#114740 - 06/22/03 10:21 PM Re: PoleCat-5
ThinkGood Offline
Member

Registered: 08/07/02
Posts: 1084
Loc: Milwaukee, WI
It is unfortunate that a brand-new installation is starting off this way... It wouldn't take all that much to have it code-compliant and would make it more safe, reliable, etc.

Top
#114741 - 06/23/03 07:40 AM Re: PoleCat-5
Bjarney Offline
Moderator

Registered: 04/10/02
Posts: 2561
Loc: West-Southern Inner-Northeast ...
One of these days a "security" technician will get a nice 277V poke from one of his 24AWG wires. Then, let all the finger-pointing and lawsuits begin!

Top
#114742 - 06/24/03 07:34 PM Re: PoleCat-5
ThinkGood Offline
Member

Registered: 08/07/02
Posts: 1084
Loc: Milwaukee, WI
Ah, but it will be a Cat-V 277V...all of those extra twists will slow down the electric.

Top
Page 1 of 2 1 2 >


ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals