Earthing SWA at both ends

[Deleted member 26818]

Is a metal back box concealed in a wall an exposed-conductive part?

 

[davesparks]

Is a metal back box concealed in a wall an exposed-conductive part?

Don't start that again!

 

[Deleted member 26818]

I find it odd that a back box which cannot normall be touched is considered as exposed, but SWA isn't.

 

[Dave OCD]

You could touch the screws though, unless it's an accessory with the tidy little plastic caps. :tongue3:

 

[Dave OCD]

And how often do you take off a socket front and find them still parked inside ?:wink5:

 

[Deleted member 26818]

Yes the screws can be touched, and apparently are acceptable to be used to earth the back box, as long as one or more of the lugs are fixed.

 

[Dave OCD]

Agreed,does anyone still run a separate tail from a socket earthing terminal to a metal wall box ?

 

[Leesparkykent]

Agreed,does anyone still run a separate tail from a socket earthing terminal to a metal wall box ?

I've had a few jobs where it's been on the spec but other than that as long as the back box has 1 fixed lug.

 

[trev]

Agreed,does anyone still run a separate tail from a socket earthing terminal to a metal wall box ?

No, you should never take an accessory off without the circuit being isolated. If It's isolated then there's nothing that can bite you therefore there is no need for the fly lead

 

[Dave OCD]

And yet I always do it on metalclad fittings in garages/workshops etc which have TWO fixed lugs.

 

[davesparks]

Agreed,does anyone still run a separate tail from a socket earthing terminal to a metal wall box ?

Yes, it's how I was taught as an apprentice and I'm a stubborn bugger.

 

[davesparks]

No, you should never take an accessory off without the circuit being isolated. If It's isolated then there's nothing that can bite you therefore there is no need for the fly lead

But a circuit is not isolated until it has been proven dead with a suitable tester. So how do you get the tester in to the lightswitch without taking it off the backbox?

 

[Dave OCD]

Really ?:laugh3:

 

[Leesparkykent]

But a circuit is not isolated until it has been proven dead with a suitable tester. So how do you get the tester in to the lightswitch without taking it off the backbox?

By identifying the circuit and carrying out the safe isolation procedure.

 

[shanky887614]

But a circuit is not isolated until it has been proven dead with a suitable tester. So how do you get the tester in to the lightswitch without taking it off the backbox?

you do this