earthing metal backboxes

[i=p/u]

Ain't required if has fixed lug I'm lead to believe

 

[Taylortwocities]

someone unscrews the socket whilst the circuit is still live,

"Someone" should not be working on electrical installations while they are still energised!

 

[ruston]

"Someone" should not be working on electrical installations while they are still energised!

Or break the speed limit , or use a mobile at the same time. The regs are a minimum standard in my opinion , if you feel happy earthing the box for the time it takes where is the harm. Poll on this too lol.

 

[telectrix]

testing?

 

[Geordie Spark]

testing?

......... testing, testing ..... one two three four.

 

[ruston]

......... testing, testing ..... one two three four.

Yep four cans left.

 

[ipf]

......... testing, testing ..... one two three four.

used to be.....two, three, nine, one.

 

[Geordie Spark]

used to be.....two, three, nine, one.

Not when I did it it wasn't ...... it was always "Testicles one two see the floor"

 

[Guitarist]

It's not uncommon for people to unscrew the faceplates when tiling, then leave them like that until they "get around to refitting them."
Always a fly-lead for me, even if it does take 1 minutes longer.

 

[Deleted member 26818]

We are required to earth exposed-conductive parts.
We are also required to connect CPCs to all exposed-conductive parts on a circuit.

A metal back box is obviously a conductive part, which leaves us to decide whether it is exposed.
Some say yes, others say no.

If you decide that it is exposed, and therefore requires earthing.
You are then left with deciding the method.
If you are happy that the 3.5mm chrome plated brass screw and the single galvanised fixed lug is an acceptable method for connecting the earth, then fine.
If not, then you will have to use a fly lead.

All that leaves, is to decide how to connect the CPC and the fly lead.
Do you connect the CPC to the back box, and then the fly lead from the box to the face plate?
Do you connect the CPC to the face plate and then the fly lead to the back box?
Or do you connect one leg to the back box, the other leg to the face plate and a fly lead in between?