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Hi, is it a requirement to run an earth wire to outside light(although its double insulated) or is it probably just best practice ? I was replacing my son,s existing outside light on a new build house with a pir security light but found there was no earth to his existing light. Thanks
 
Hi, is it a requirement to run an earth wire to outside light(although its double insulated) or is it probably just best practice ? I was replacing my son,s existing outside light on a new build house with a pir security light but found there was no earth to his existing light. Thanks
All electrical points require a cpc (earth wire) whether used or not
 
Either I'm going blind or it's not in the book that every circuit shall have a CPC?

Sanity check please, 543 onwards.
 
Have a closer look, guess the new build sparky has snipped off the annoying earth wire; it'll be hidden inside the outer sheathing.
 
you might want to check all the lighting points for a cpc. Switches and lights.
I would think a new build domestic property would be wired in grey twin and earth.... and the earth is there, just cut off.
It could be a pain if there’s not enough spare cable to pull
 
Every point in the wiring (not just every circuit) must have a cpc terminated. So obviously a cpc is required at a luminaire, whether inside or outside.
But where is it written? I'm not being pedantic, I can't find it in the book.
 
While we’re on he subject then, if say a klix box has a cpc to it, I am ok to plug 2c off that to class 2 fittings?
I would personally say that the cable from the klix box should be at least a 3 core (containing a cpc) as it is not the same as a lamp holder given as an exception in the regulation unless your primary means of protection is the protective measure double Or reinforced insulation which is not permitted in a domestic installation.
 
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