Chasing out

[PeterPan27]

Just i simple question peeps.

When chasing out a wall to fit 1.5 twin and earth how far do you have to chase? 50/65mm? Also you cant just plaster over the cable cause thermal insulation.. whats the plastic cover called? which you place over the cable then to plaster/fill over?? and is this tacked into place with small nails?

Sorry if its a stupid question. so far all my work has been done on metre square boards lol

 

[snowhead]

Just i simple question peeps.

When chasing out a wall to fit 1.5 twin and earth how far do you have to chase? 50/65mm?

Just far enough so the plasterer doesn't rip it to shreds

Also you cant just plaster over the cable cause thermal insulation.. whats the plastic cover called? which you place over the cable then to plaster/fill over?? and is this tacked into place with small nails?

Capping, not always needed, some people use some don't.
Yes galv nails if you can get them in, otherwise screws if it's granite blocks or concrete.

 

[telectrix]

or, do a proper job and use oval conduit, secured with the correct clips, drilled and rawlplugged to the brickwork.

 

[rmc86uk]

or, do a proper job and use oval conduit, secured with the correct clips, drilled and rawlplugged to the brickwork.

Yes but a deeper chase is needed for the clips.

 

[MDJ]

whats the plastic cover called?

Gasp

 

[markc123]

or, do a proper job and use oval conduit, secured with the correct clips, drilled and rawlplugged to the brickwork.

Metal capping for me where possible tel. Have one major gripe with the pvc oval conduit - it will not stop a screw, its plastic lol.

Have used it though myself so can't really complain lol.

 

[lennox]

surely the metal capping isnt going to protect it atal either?or do you earth the capping also?

 

[markc123]

It isn't properly no, but imo its better than oval conduit - im not saying either/or is wrong.

Depends on the job - it's not actually a requirement to earth the capping, it's just seen as good practice.

 

[Guest55]

pyro , swa , metal capping , oval pvc.
none will stop a nail , only steel conduit does that so anything else is a waste of time ;-)
good grief its a house so just clip direct & plaster.
use the time saved to watch t.v. or something.

 

[shocking_eg]

the amount of effing and blinding done when a cable is damaged in the wall and you cant pull a new piece through as the lazy sparks previously didn't bother using any oval !!!!

cant stand cables directly buried !

 

[Daniel Cotter]

I told my last customer he needed two bits of cable chasing. His reply was cant you use trunking instead :O.. yes I can lol

 

[KAS1]

Never seen metal capping earthed in my life, come to that never seen it stop a drill and a screw lol

 

[Dave 85]

I normally use oval or PVC capping. PVC capping for new build and whatever is quickest in chases. I F'ing hate metal capping and do not see any point in it at all. The only reason I dont clip direct as BIff has suggested is that other trades tend to get the impression you are a lasher and it my damage my reputation.

 

[gooner85]

metal capping wont stop a nail but you would hope the person hammering a nail into it would hear the difference in hitting plaster and then metal before it goes through lol.

 

[shocking_eg]

more chance of you damaging the cable with the sharp edges of the metal capping then it actually protecting it lol