In wall trunking question......

[fizz47]

I am getting my tv wall mounted with the trunking to be hidden inside of the walls...

My question is, should the trunking or conduit be metal or plastic?

Will the metal conduit interfere with signals at all?

Would trunking like this be ok to pass hmdi cables, sat cables adn power cables through?

http://www.screwfix.com/p/tower-mini-trunking-38mm...

[JohneeBoy]

You should be OK as there is no charge going through the trunking itself so no interference. It's more likely that the interference would come from any power cable you might have in the same trunk. That said, some would say that as its digital it'll make no difference. Others might completely disagree with me though.

Oddly enough I am going to be installing some trunking for the same reasons; for the first time too. How do you install it in to brick exterior wall?

[mattdaniels]

That trunking will be fine, though I would use screws rather than rely on the double sided tape to hold it in place.

[NH1]

That trunking is for surface use really and I think you will struggle to get leads in and out of it.

I have used this before now when the wall depth has been accommodating, a couple of 90s at either end with a brush outlet plate and you can get anything down it.

http://www.screwfix.com/p/manrose-rectangular-flat...

[abbotsmike]

I would say fit something way larger than you think you need, and put a draw cord in for the inevitable future cables!

[fizz47]

abbotsmike said:

I would say fit something way larger than you think you need, and put a draw cord in for the inevitable future cables!

sorry for my ignorance- what is a draw cord and how does that work?

[megaphone]

fizz47 said:

abbotsmike said:

I would say fit something way larger than you think you need, and put a draw cord in for the inevitable future cables!

sorry for my ignorance- what is a draw cord and how does that work?

A cable or string or similar, so that you can pull (draw) through other cables in the future.

[PAULJ5555]

fizz47 said:

sorry for my ignorance- what is a draw cord and how does that work?

Just run spare bits of string through it and leave them there for the future, you can use these to pull through new cables.

[fizz47]

PAULJ5555 said:

Just run spare bits of string through it and leave them there for the future, you can use these to pull through new cables.

gotcha - i thought there was some mechanism or something you buy to do this - i tend to miss the obvious sometimes and overthink things...

thanks!

[bsdnazz]

I've got some high grade, oxygen free, directional draw string at only £25 per cm. As this is left in the trunking for future use it can impact on signal quality.

[ Any one know where I can get some black nylon string in a hurry? ]

[Jarcy]

PAULJ5555 said:

fizz47 said:

sorry for my ignorance- what is a draw cord and how does that work?

Just run spare bits of string through it and leave them there for the future, you can use these to pull through new cables.

I used the exact same trunking for various applications. Either laid plasterboard over the top or trowel plastered over.
I would agree with the comment that you should consider bigger trunking than you expect and most definitely slip at least one draw cord down it too to future-proof.

7 years ago I built a cinema room and wired up for 5.1 surrounds, but left empty trunking in place and blank plates where I might want to expand the surrounds to 7.1. But I also used several lengths of trunking down to the main hub for speaker cables, HDMI from projector, multiroom etc etc.
Last month I made the move to 7.1 with two new speakers, and so cabling up was pretty easy by pulling it through with the draw cords I'd left there 7 years ago.
I used kite string, being thin, slippery and strong.
Next job is to pull another HDMI through for another multiroom application. It's not the cable width that's the problem, it's the size of the HDMI plug that you need to pull through without getting jammed.

[897sma]

You don't need to leave multiple draw wires in for every cable you might need in future, just remember to pull another one in at the same time as you pull in each new cable