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- Jan 21, 2011
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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.
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.
