Bad practice or fine ?

[stevie h]

Got a rewire on at the mo and there is metal conduit for all of the original s/w drops , buried in the wall , the customer is happy with the original s/w positions so i was going to use the conduit to save chasing and mess , the conduit is not earthed , can i run my s/w drops in it ...? will be rewired to 17th..

cheers

Ste

 

[Bane]

Ooooh.

Going to stick my neck out and say...

Fine?

 

[tony.towa]

Use the existing conduit purely as a cable route, with your switch wires make sure you run in a cpc.

 

[Bane]

Use the existing conduit purely as a cable route, with your switch wires make sure you run in a cpc.

It's like your reading my mind Tony!

(Night all!)

 

[jibspark]

im confused, why would you think it would be bad practice? unless ive missed something? (i usually do!)

 

[stevie h]

im confused, why would you think it would be bad practice? unless ive missed something? (i usually do!)

conduit not being earthed , and as i,v never used old conduit drops on a rewire before, so i thought i ask you knowlagable gents

 

[rumrunner]

you might have to change the boxes ,the face plate screws might be a different size,and the knockout in the new box might not line up,and on some boxes theres no earth terminal,also if its half inch conduit you will find it a bit tight for more than onec tae,but apart from all that using it should be ok

 

[jibspark]

conduit not being earthed , and as i,v never used old conduit drops on a rewire before, so i thought i ask you knowlagable gents

sorry i thought you meant you were gonna bond them, if you bond them all i shouldnt think it would be a problem,

i would be supprised if the screws wernt the same size, usually all 3.5mm i thought, you can always drill a new hole if the KO didnt line up, and if for some odd reason they didnt have earth piller in the back you could put some in couldnt you?

 

[mpfisher@hotmai]

Use the conduit mate and dont worry about bonding it 30mA protection takes away the need to bond IMO......

oh and by the way CUT THEM SEALS !!

 

[heathelect]

Ref faceplate screws the very old ones used to be 4ba but they will tap out with a 3.5mm tap no problem, go ahead reuse the old conduits is not a problem ive done it for years, we dont earth metal capping do we ?
Regards dave

 

[wayne]

new regs new world (been watching some politician on the news)
earthed covering or rcbos in short

 

[stevie h]

The original sw heights are not all exactly the same , so the plans is to drop them all a bit , so there spot on , so its down the conduit , out , short run of capping into new sw box .... so the conduit will not be getting an earth off the box , that is why i thought i,d double check .

As for the original sw boxes , there aint none , the switches are screwed via a sort of " u " shaped bracket mounted on the brick work and bit of wood , its very old , .... skts are single mk very old type mounted on the skirting , round pin inserts

 

[wayne]

rum could be right about the screws

 

[jibspark]

i reckon, i never seen anything like that! but then i havnt got around much yet! lol

 

[wayne]

wait till you got a 50 year old rewire ....