channeling wires

[velvitjester]

I currently have my 40" lcd over my fireplace.I am going to try to bury the wires in the wall,I am going to be burying the tv's power cable,a scart,2 hdmi's and a vga and maybe a coax.

i will be using plastic trunking something like this http://www.app.net.au/images/product...ical_small.jpg

my plan is to run the 2 hdmi's in one,the vga and scart in one and the power cable in a seperate one.is this overkill or right.
I am just thinking about the interfierance problems i may have,especially with the power cable
Is it safe to bury the power cable in trunking?and will there be interfierance by putting 2 hdmi's in one piece of trunking.or a vga and scart in one piece of trunking?


Thanks Dave

[ched]

As long as you keep the power away from the other cables you will be fine. As for the trunking I would use capping, see link below.
http://www.tlc-direct.co.uk/Images/P..._3/MTCAP12.JPG
reason is that its cheap, easy to put cables against channel then place capping over cables then nail in using galvanized nails (so they dont rust and bleed through your new plaster).

It may be better to actually put a spur (electrical socket) behind the tv as you are going to channel anyway a permanent socket behind the tv might be better option. As other wise you might have to extend the existing tv cable and in years to come the joint may fail or you might buy a new tv that needs a different power cable!
Only issue with adding a spur is building regs, I am not up on them regarding electrical installation. I would guess someone else will comment on if you are allowed to add a spur these days without some council muppet winging.

[velvitjester]

Originally Posted by ched

As long as you keep the power away from the other cables you will be fine. As for the trunking I would use capping, see link below.
http://www.tlc-direct.co.uk/Images/P..._3/MTCAP12.JPG
reason is that its cheap, easy to put cables against channel then place capping over cables then nail in using galvanized nails (so they dont rust and bleed through your new plaster).

It may be better to actually put a spur (electrical socket) behind the tv as you are going to channel anyway a permanent socket behind the tv might be better option. As other wise you might have to extend the existing tv cable and in years to come the joint may fail or you might buy a new tv that needs a different power cable!
Only issue with adding a spur is building regs, I am not up on them regarding electrical installation. I would guess someone else will comment on if you are allowed to add a spur these days without some council muppet winging.

thanks for the advice,regards a spur,i am still going to be using the fireplace and if i was to put one in it would be very close to the flu,so i dont really want to.Is it dangerous to put the power lead in trunking and plaster over?


if i use the capping the back side of the wires will be exposed to the brick work.is this ok?I thought if you are putting wires in the wall they cant touch the brickwork and have to be shielded in a channels the whole way

[ched]

Its not dangerous to put power lead in channel and plaster over but as I said if you ever change your tv to one with a fixed power cable you might have a little problem. If you have space you could use a surface mount socket that way you dont need to channel so deep.

I would be very surprised if your flue made the cables hot. Does your wall get hot now, when you have the fire on?

The main reason for covering cables in walls is that the chemicals in plaster can attack the cable and damage it over time. The capping protects the cable from the plaster, the wall behind wont damage cables.

[velvitjester]

Originally Posted by ched

Its not dangerous to put power lead in channel and plaster over but as I said if you ever change your tv to one with a fixed power cable you might have a little problem. If you have space you could use a surface mount socket that way you dont need to channel so deep.

I would be very surprised if your flue made the cables hot. Does your wall get hot now, when you have the fire on?

The main reason for covering cables in walls is that the chemicals in plaster can attack the cable and damage it over time. The capping protects the cable from the plaster, the wall behind wont damage cables.

thanks mate,much appreciated,I dont think il be changing it anytime soon,so il just channels the power lead.the wall doesnt get too hot and i am going sideways across the fireplace with the wires,so they arent too close to the flu.

[ched]

Sounds like you have a plan Good Luck.
Please post your results as we are always happy to see how everyone does things.

[velvitjester]

will do.thanks again