Missing cpc in domestic lighting circuit

[codger]

Morning. A friend and I have been carrying out some EICRs on properties in our area. Recently, my mate has come across two houses in which the lighting circuits do not have any earthing at all. They have been run in twin and earth but the earths have all been snipped off at lighting points, switches, jointboxes etc. The colours of the cable are black and red (give you an idea of the age of the installation). The ceiling, floors and walls are all concrete and it looks like the twin and earths have been dropped down conduit drops to the switches.

As far as the EICR goes what would you put this down as...? We're thinking C2. Someone else suggested that it goes down as a C3 as long as it's stipulated that only plastic fittings should be used.

Cheers

 

[Bobster]

Have you checked that the conduit isn't the CPC?

 

[The Ghost]

http://www.electricalsafetyfirst.org.uk/mediafile/100126675/Best-Practice-Guide-1.pdf
Is this of any use

 

[westward10]

The cpcs should be terminated but the Coding would depend upon if any back boxes, accessories or fittings need the connection of a cpc for fault protection. Are they metal back boxes and if so do they incorporate nylon fixing lugs because they don't need earthing. If they have cut them out sounds like a rough job.

 

[codger]

Have you checked that the conduit isn't the CPC?

Yes mate. No sign of the conduits at the consumer unit. Just three twin and earths floating away into the wall at the board.

 

[Bobster]

Have you tested it? Or just basing it on a visual inspection?

 

[codger]

The cpcs should be terminated but the Coding would depend upon if any back boxes, accessories or fittings need the connection of a cpc for fault protection. Are they metal back boxes and if so do they incorporate nylon fixing lugs because they don't need earthing. If they have cut them out sounds like a rough job.

They are metal boxes....no plastic inserts though. I know the ones you mean. We've peered up at a switch and spotted that it looks like the old conduit system....the ones where the switch back boxes had a wee spigot that pushed onto the end of the conduit drop.

 

[westward10]

Yes mate. No sign of the conduits at the consumer unit. Just three twin and earths floating away into the wall at the board.

There isn't an existing board behind it fitted flush is there where these conduits maybe terminated.

 

[Russ3541]

c2 mate, unless there is absolutely no metal fittings, backboxes, conduit etc.

 

[westward10]

c2 mate, unless there is absolutely no metal fittings, backboxes, conduit etc.

Was going to comment but forgot what is was

 

[Octopus]

http://www.electricalsafetyfirst.org.uk/mediafile/100126675/Best-Practice-Guide-1.pdf
Is this of any use

Hum.... the OP is doing EICR's so the 4th guide is what he needs to refer to......

 

[The Ghost]

Hum

Yep agreed but there is some good food for thought in there on how to proceed after the EICR