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Discuss Bad practice or fine ? in the Industrial Electrician Talk area at ElectriciansForums.net

S

stevie h

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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
 
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B

Bane

  • Thread Starter Thread Starter
  • #2
Ooooh.

Going to stick my neck out and say...

Fine?
 
T

tony.towa

  • Thread Starter Thread Starter
  • #3
Use the existing conduit purely as a cable route, with your switch wires make sure you run in a cpc.
 
J

jibspark

  • Thread Starter Thread Starter
  • #5
im confused, why would you think it would be bad practice? unless ive missed something? (i usually do!)
 
S

stevie h

  • Thread Starter Thread Starter
  • #6
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 :)
 
R

rumrunner

  • Thread Starter Thread Starter
  • #7
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
 
J

jibspark

  • Thread Starter Thread Starter
  • #8
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? :)
 
  • Thread Starter Thread Starter
  • #9
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 !!
 
H

heathelect

  • Thread Starter Thread Starter
  • #10
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
 
W

wayne

  • Thread Starter Thread Starter
  • #11
new regs new world (been watching some politician on the news)
earthed covering or rcbos in short
 
S

stevie h

  • Thread Starter Thread Starter
  • #12
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 :eek:
 
J

jibspark

  • Thread Starter Thread Starter
  • #14
i reckon, i never seen anything like that! but then i havnt got around much yet! lol
 
W

wayne

  • Thread Starter Thread Starter
  • #15
wait till you got a 50 year old rewire ....
 
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