When the installation is upgraded from say 12v 50w halogen to 220v to a GU 10 bracket + block connection which has a porcelain type holder
to accommodate a LED lamp.
Now the lamp is plastic, the holder is non conductive , but the requirement is for the fitting to be earthed.
Only recently you get fittings with an earth terminal.
What happens to all those other installations that haven't. There is some type of an affair where you could slide the lamp holder
into the spring, also there is a space on some fitting to slide the point of the holder into.
But both those are wishy washy, But would the light point pass under that clause that its out of arms reach....
You see there is another regulation that says all metal fittings to be earthed....so what is what....
Ian