ebee:

"There is also the controversy of a permanent live terminal in a ceiling rose."

What controversy is that then?

It's not obvious to installers of light fittings, in the same way that a permanent live terminal at a switch is, unless they have knowledge of how loop-in wiring is connected. There have been cases of installers of light fittings receiving electric shocks because the lighting circuit was not switched off at the consumer unit even though it was switched off at the wall switch.

Both loop in at rose and loop in at switch have their merits and demerits. That junction box idea is OK if it is in an eaceesable place, say by a loft hatch but under floorboards is a no for easy alterations.

The Wiring Regulations (does anybody know which edition?) do not permit a junction box with screw terminals to be installed in an inaccessable place or underneath floorboards unless they can easily be removed for inspection. I assume the same applies to chocolate blocks with screw terminals shoved into the ceiling cavity. Junction boxes with spring clamp terminals are permitted for installation under floorboards as they are deemed to be self tightening and maintenance free.

Stop manufactures making daft light fittings. 4 terminals and room for three (T & E) cables should be the minimum

Light fittings are now designed and manufactured for the global market rather than for the peculiarities of British wiring (which also explains why most recent models are Edison screw rather than bayonet cap) so often only have terminals for one cable rather than three. Even plenty of older British light fittings and decorative ceiling roses are no different.


Are there any countries, other than the UK, where loop-in wiring with ceiling rose junction boxes is commonplace?

ebee:

"There is also the controversy of a permanent live terminal in a ceiling rose."

What controversy is that then?

It's not obvious to installers of light fittings, in the same way that a permanent live terminal at a switch is, unless they have knowledge of how loop-in wiring is connected. There have been cases of installers of light fittings receiving electric shocks because the lighting circuit was not switched off at the consumer unit even though it was switched off at the wall switch.

Both loop in at rose and loop in at switch have their merits and demerits. That junction box idea is OK if it is in an eaceesable place, say by a loft hatch but under floorboards is a no for easy alterations.

The Wiring Regulations (does anybody know which edition?) do not permit a junction box with screw terminals to be installed in an inaccessable place or underneath floorboards unless they can easily be removed for inspection. I assume the same applies to chocolate blocks with screw terminals shoved into the ceiling cavity. Junction boxes with spring clamp terminals are permitted for installation under floorboards as they are deemed to be self tightening and maintenance free.

Stop manufactures making daft light fittings. 4 terminals and room for three (T & E) cables should be the minimum

Light fittings are now designed and manufactured for the global market rather than for the peculiarities of British wiring (which also explains why most recent models are Edison screw rather than bayonet cap) so often only have terminals for one cable rather than three. Even plenty of older British light fittings and decorative ceiling roses are no different.


Are there any countries, other than the UK, where loop-in wiring with ceiling rose junction boxes is commonplace?