Metal Desk Lamp - Wiring/compliance

[Andy™]

DP switching is for isolation. by your example you cant wire a normal pendant with a single pole switch. and if you did have to use DP switching, then 2 way (& intermediate) could be interesting...

 

[Marvo]

Ah, that explains it, I didn't realise it was just isolation that needed D/P switching, I thought it might be control as well because I saw somewhere that sockets required D/P switches.

 

[ProDave]

Surely if the pre-assembled lampholder and flex assembly came with ClassII certification then the metallic housing of the lamp would just fall under the normal supplementary bonding regs if it was for domestic use? This is a question, not a statement, I genuinely don't know the UK regs so I'm interested what you'd be unhappy about.

the potential for the insulation of the cable to chaffe through allowing L to make contact with the metal tube which was not earthed was my concern.