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[B]Cabling through a very "hot" (EMI) enviromment[/B]

post #1 of 5
Thread Starter 
Cabling through a very "hot" (EMI) enviromment


Hi,

I'm installing a structured wiring network in a residential home and have a situation where currently the only open route for about
40' (2-20'chases) is through an a/c duct chase. Unfortunately the electrician is doing the same thing and we all know who has priority.
The chase will be a main electrical route with quite a few runs of different voltages and varying loads. The space left over the after
duct is in place is about 8" wide and 15" high. Then electrical wiring for the entire house will route through on the way to the breaker panel.
Fortunately there is no wallboard installed anywhere in the house so there still are alternative routes.

Questions:

Is this chase too "radioactive" for structure wiring cable runs without extreme shielding methods making it unusable due to expenses,
or would I just have to use grounded metal conduit at a minimum?

How much does the conduit metal wall thickness matter?

Does proper shielding require a minimum wall thickness, the heavier the better?

Can any type of steel pipe be used, just as long as its grounded?



Thanks for sharing your knowledge and experience with me.

ArnCapo
Edited by ArnCapo - 11/14/13 at 3:07pm
post #2 of 5
Where on earth is it code to run high voltage stuff through ac?

Bill
post #3 of 5
Doing some quick research it looks like you need 2-4" separation from power-lines to avoid issues. Here is a long thread on the topic:

http://www.dslreports.com/forum/r25361166-Can-you-run-CAT5-wiring-and-power-wiring-together-?r=0.469298923944251
post #4 of 5
Thread Starter 
Quote:
Originally Posted by mrfattbill View Post

Where on earth is it code to run high voltage stuff through ac?

Bill

The ac duct is running through a wooden chase which is wider then the ducting by about 8". Thus the power is running next to the ducting, not through it. Hopefully I understood your question.
post #5 of 5
Thread Starter 
Quote:
Originally Posted by Matt L View Post

Doing some quick research it looks like you need 2-4" separation from power-lines to avoid issues. Here is a long thread on the topic:

http://www.dslreports.com/forum/r25361166-Can-you-run-CAT5-wiring-and-power-wiring-together-?r=0.469298923944251

Thanks, I'll give it a read.
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