I was under the impression that the conduit was no longer connected to the back-boxes.
Consumer Unit Replacement
- Thread starter Gazzer23
- Start date
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Sorry if I missed a relevant bit, but -
as the back-box is not considered an exposed-c-p then neither will the conduit be IF it is all buried and no longer used as the CPC.
If the back-box is earthed by the face-plate screws then so will be the connected conduit but this is not a requirement although, as I said, most people think it a good idea.
as the back-box is not considered an exposed-c-p then neither will the conduit be IF it is all buried and no longer used as the CPC.
If the back-box is earthed by the face-plate screws then so will be the connected conduit but this is not a requirement although, as I said, most people think it a good idea.
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Agreed, as far as it goes - but, I suppose to be pedantic, faceplate screws presumably do count as exposed-c-ps and, in the absence of a directly earthed backbox, they won't be earthed in any way if the accessory is, for example, a plastic light switch.
Kind Regards, John
True but I think 'most people' in that situation would connect the CPC to one of the back-box fixing screws at the very least.
Yes, I would certainly number myself amongst those 'most people'.
Kind Regards, John
Just to clarify what I have been trying to say, I just taken the face plate off the hallway passage switch and taken a photo.
Note as I said earlier its an old style back box with no earth terminal and the screws aren't earthed as I got confused and I was remembering a socket face plate and not a simple light switch face plate.
I was thinking of drilling a hole in the corner of the back box and tapping so I can put a screw in it and connect the floating earth lead to it but I am not sure if it is worth the effort or not now ?
Note as I said earlier its an old style back box with no earth terminal and the screws aren't earthed as I got confused and I was remembering a socket face plate and not a simple light switch face plate.
I was thinking of drilling a hole in the corner of the back box and tapping so I can put a screw in it and connect the floating earth lead to it but I am not sure if it is worth the effort or not now ?
I've yet to encounter a metal back box without an earth terminal.
Ha.
The above crossed Gazzer's post....
Ha.
The above crossed Gazzer's post....
Ah it looks as if the box is held in with plaster/cement rather than 'fixing screws' - so, so much for EFLIs suggestion (with which I agreed)!
If it's a plastic switch going on there, then that would probably be the only way of doing it. However, to tap a hole you'd have to drill significantly into whatever is behind the box, so why not just drill into the wall through one of the existing holes, put a wall plug and screw into that hole and use the screw to attach the earth wire?
Kind Regards, John
I suppose when mine were put it, it was standard for the CPC to be the conduit so it wasn't deemed necessary to put earth terminals on the back box.
Is that some kind of gangsta slang?
That is a very good idea, thanks for that.
Ha ha very good, I didn't notice that.
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