opinions on this, please.

[telectrix]

this is a difference of opinion between myself and another spark. existing drops in VIR enclosed in split tube. rewiring using said split tube to minimise chasing. does this tube then become a conductive part of the installation and thus requires earthing, or, as it is buried and inaccessible and RCD protected, is it treated the same as using metallic capping, and not require earthing. look forward to other thoughts on this. cheers all,

tel.

 

[SPARTYKUS]

Wouldn't bother Tel, although you'll get a difference of opinion imminently .

*fix bayonets*

 

[telectrix]

bayonets or ES? BC2 or BC3?

 

[Deleted member 26818]

I would say that the conduit is a conductive-part, but not an exposed one.
As such, it doesn't require earthing.

 

[topquark]

It depends on how you view the conduit ... Is it's intention in this case to provide mechanical protection, sufficient to prevent some numpty putting a drill through it, that's probably a no. So, as there's an RCD protecting it, I would suggest it doesn't need to be earthed if there is none of it exposed to touch anywhere.

 

[telectrix]

thank you spinlondon and topquark. i'll copy you replies . then my mate owes me a pint.

 

[oxocube]

does this tube then become a conductive part of the installation and thus requires earthing, or, as it is buried and inaccessible and RCD protected,

Did a job like this years ago, and I ran a single earth wire from the switch/socket box back up the conduit and fixed to the conduit via a Tenby in the ceiling void, in the loft I linked all the drops together with a single earth wire. But that was without rcd protection.

Even with rcd protection I'd probably do the same thing today, but could'nt really argue with those who would'nt bother, as you say its very similar situation to metal capping.

 

[SimpleSimon]

If it's in plaster than I. Wouldn't class it as an exposed part.
With RCD protection, it's additional protection so I wouldn't bother either. Make sure it's an expensive pint Tel.

 

[Knobhead]

Make sure it's an expensive pint Tel.

For a pint of whisky, I’ll go along with anything!

 

[telectrix]

at least there is something good to be said about the metric system. a 35ml. measure is bigger than 1/6 of a gill.

 

[Knobhead]

To hell with 35mL I want a 0.586 litre full pint measure.

 

[Knobhead]

I'm off to the pub soon :teeth_smile:

 

[Deleted member 9648]

As long as precautions are taken to prevent a short to the conduit..ie,rubber bush on ends,and double insulation all the way through....not a conductive part and no need to earth IMHO...(better if you can though!)

 

[SPARTYKUS]

I've had two pints of Stella already. At home.



Monday house Dad

 

[Engineer54]

My parents house had 3/4'' embedded conduit drops with a welded besa box at the termination point and a push fit rubber protection grommet at the ceiling void end. I just earthed the besa box and a fly lead to the switch back box terminal. Much later i removed the embedded besa boxes and flushed them all with standard 25mm flush knockout boxes. I just treated the conduit then as mechanical protection for the drops, couldn't see the point of earthing them.

It was a real pig of a job getting those besa boxes off of the drops, and needed a bloody big hole to do it too...lol!!