Does an I-beam provide enough wiring isolation


Old 06-16-17, 11:21 AM
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Does an I-beam provide enough wiring isolation

I am running electrical and low voltage cable (RG6 and cat5e) on opposite sides of an i-beam that run in parallel for about 6 feet. Is that ok from an interference perspective?
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Old 06-16-17, 11:58 AM
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IMO, if it's a steel I beam, it would be a conductor not an insulator.
Old 06-17-17, 11:11 AM
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The steel should knock down any possible interference between the cables.
Old 06-17-17, 05:18 PM
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I agree...think of it as trying to transmit wifi through solid steel walls. Not going to work very well, whether the steel is grounded or not.
Old 06-18-17, 08:44 AM
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Note you can get Cat 7 "shielded" Ethernet wire.
Also you can get "Quad Shielded" RG-6.

No outside interference!
Old 06-18-17, 09:19 PM
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Thanks everyone. Unfortunately I already bought the cable. But the cat6 is shielded at least.
Old 06-18-17, 09:22 PM
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Running the cables on opposite sides of the metal beam are fine and will cause no problems.
Old 06-20-17, 08:40 AM
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Coaxial and UTP cables resist interference by design. If the connectors on the ends are properly terminated the cable routing paths are not really all that important in residential where the voltage and magnetic fields simply aren't strong enough to cause a problem.

BTW, shielded UTP is only effective if you have a properly grounded patch panel and terminate the shields and drain wires correctly on that panel. You also need shielded keystone jacks on the terminal end of the runs, again installed with clean technique. This stuff is really expensive and time-consuming to install for no real benefit in residential.
Old 06-21-17, 12:32 PM
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I completely agree with what Ben said. While it's good practice to keep low voltage and power lines separated when possible, I wouldn't worry about it in the slightest, I-beam or not.

It was different years ago when using non-twisted phone cables and a lot more noisy power devices like old fluorescent lights, and in more commercial/industrial settings.

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