What is the best way to wire ceiling lights?

"Putting screws through the cover of plastic ceiling light roses is potentially lethal. "


I think we might be talking at cross purposes or I am Missing something.

I am not talking chandeliers on pulleys etc I am talking about the light fitting that effectively hooks onto a hook or hole in a bracket and the connection is via three wires usually floating.into a strip connector. The CR base is like a set of fixed strip connectors, the hook is attached to the joist therefore weight bearing. The "cup" of the (earthed) light fitting now encloses the connection box (CR backplate) . Therefore once the light fitting is hooked on the hook in the joist is earthy via the light fitting and totally enclosed (topside via the joist and bottomside via the earthed cup). If the ceiling hook vis via a bracket then an earth link wire is attached too. Take a look at a fanlight, is that so very different in practice?


I am not talking about putting a hook thru the cover of a CR and hanging a light fitting on it. That would make the hook an exposed conductive part. There is no cover on the CR backplate, the light fitting ceiling cover has replaced it and it is earthed. If instead it were a plastic cup it would be insulated. In any event the hook would be enclosed just in the same way that a ceiling rose fixing screw head is enclosed by backplate and cover and screwed into joist.

"Putting screws through the cover of plastic ceiling light roses is potentially lethal. "


I think we might be talking at cross purposes or I am Missing something.

I am not talking chandeliers on pulleys etc I am talking about the light fitting that effectively hooks onto a hook or hole in a bracket and the connection is via three wires usually floating.into a strip connector. The CR base is like a set of fixed strip connectors, the hook is attached to the joist therefore weight bearing. The "cup" of the (earthed) light fitting now encloses the connection box (CR backplate) . Therefore once the light fitting is hooked on the hook in the joist is earthy via the light fitting and totally enclosed (topside via the joist and bottomside via the earthed cup). If the ceiling hook vis via a bracket then an earth link wire is attached too. Take a look at a fanlight, is that so very different in practice?


I am not talking about putting a hook thru the cover of a CR and hanging a light fitting on it. That would make the hook an exposed conductive part. There is no cover on the CR backplate, the light fitting ceiling cover has replaced it and it is earthed. If instead it were a plastic cup it would be insulated. In any event the hook would be enclosed just in the same way that a ceiling rose fixing screw head is enclosed by backplate and cover and screwed into joist.