replacing class 2 fitting, no visable earth.

[ianphilip007]

Hi all need a little clarification.

Customer wants ceiling light fittings x 2 replaced with class 1 fittings. Lighting circuit is earthed at C.U. and class 1 wall switches, and at one of the lights. There appears to be no earth at the second light( just x2 black singles & no sign of the loop). Note both lights are in same room about 3meters apart but are switched seperatly. I have not been into the loft as of yet, there may well be a junction box_ containing the earth & loop. If so no problem.

If no earth is present I plan to extend the earth from the other light point ( same lighting circuit)

if I have understood the regs correctly the min size CPC will be 4mm with no mechanical protection or 2.5mm with mechanical protection. Would hate to try and terminate 4mm into a light.

Note only 3 meter straight run so conduit/trunking to provide mech protection.

 

[Octopus]

If the run is so short I would rip out the singles and run in a new length of 1.5 T&E

 

[ianphilip007]

if the singles are fed from jb above which contains loop and earth then i agree simple to replace with 1.5 t+e. But if not then 2.5mm earth (mech protected) from other light fitting would be acceptable way of earthing the class 2 fitting. Yes ?

 

[Guest77]

As the lights are upstairs then do what Murdoch suggested, it will take 2-3 minutes to stick a bit of twin and earth in surely?

 

[telectrix]

yes.....but T/E is better option, as said......morning, lads.

 

[Guest77]

Morning Tel

 

[Guest77]

Stick this thread in DIY team please lol

 

[telectrix]

just been scrubbing hands again. getting resin traces off fingers from yesterdays SWA jointing job. hate then joints. seen one at elex which is pre-filled gel, but lost the firm's contact details.

 

[ianphilip007]

the question was about the size of CPC and mechancial protection required if a seperate earth needed to be run to the lighting point. i am well aware of the other options.

 

[ianphilip007]

Not quite sure what your trying to say here ?