Bonding of conduit in kitchen floor

[Lagentium]

Bit of a debate today, advice please as regs book not possible to get in my hands until tomorrow. New job, apartments, in the kitchen there are 2 x 25mm conduits from an external wall to an island within the kitchen that is free standing, to be able to get the hob supply across and lighting with a spare in case any sockets are added at a later date. My question is, do these require bonding? Thanks in advance.

 

[telectrix]

my tuppence worth. similar scenario is metal tray/basket carrying T/E. that tray/basket does not have to be earthed.

 

[Pete999]

Pete they are conduits, part of the electrical installation, They cant be extraneous!!!

Yes realised that what a Dork I am

 

[Ian1981]

Hmm after much thinking taking everyone’s comments and digging in the regulations again I’d be inclined to agree that it’s an exposed conductive part and would require earthing.
I hope your all happy

 

[Risteard]

Hmm after much thinking taking everyone’s comments and digging in the regulations again I’d be inclined to agree that it’s an exposed conductive part and would require earthing.
I hope your all happy

Glad you agree!

 

[telectrix]

so why do we not earth tray when it's carrying T/E?

 

[Ian1981]

Because I guess the tray isn’t part of the electrical installation that’s to say it’s not classed as an exposed conductive part it’s only a cable management system.
If you have GN8 I’d have a read of page 164&165.

 

[Pete999]

So is the conduit isn't it? cable management I mean.

 

[Ian1981]

Conduit is containment.
Where tray basket is a support system.
That’s my understanding anyway.
As I say have a read of GN8

 

[telectrix]

Conduit is containment.
Where tray basket is a support system.
That’s my understanding anyway.
As I say have a read of GN8

good point. can you now advise IET on some of their more obscure ambiguous regs.?

 

[Andy78]

I have earthed basket and tray many times before to follow specification.

 

[telectrix]

I have earthed basket and tray many times before to follow specification.

so. up aladder checking for a damaged cable. one hand in contact with the esrthed tray. other hand fishing round contacts a live conductor ( insulation damage?). ZAP.

 

[Ian1981]

Usually through parallel paths the basket ends up earthed anyway such as metal framed structures when you mount the brackets to them.

 

[David M]

so. up aladder checking for a damaged cable. one hand in contact with the esrthed tray. other hand fishing round contacts a live conductor ( insulation damage?). ZAP.

Would that not apply only if the tray was extraneous?

 

[Risteard]

I have earthed basket and tray many times before to follow specification.

Indeed. For right or wrong it's commonly required by clients.

 

[Midwest]

Should of just used plastic conduit. It would of saved all this arguing