No power through ceiling rose

[smartin1612]

Hello all,

I'm replacing a 3-bulb spotlight with a standard BG ceiling rose but upon connecting, the light won't turn on; the problem is, I can't see why.
We can handle the wiring shortly, but after a day or two of testing - wiring the spot back on, test (it works), replacing with the ceiling rose (it doesn't work), I finally gave up and wired the spotlight to a plug and tested - dropping the 13A down to a 3A first.
The spotlight predictably worked as expected, but upon switching over to the ceiling rose, using the same bulb as the spotlight - it's a 7w bulb, I'm not getting anything, although I am registring power both on the cable terminals and, the light terminals, just no light. It's as though the light terminals are performing a huge resistence that the power could not overcome it and light the lamp.

I have already gone through the motions of junction boxes and switches trying to troubleshoot, which came-up blank - even to wiring the rose direct to the light cicuit and the junction box in the attic [we're still on junction boxes for the lighting circuits rather than using the rose loop] to bypass the switch [using the RCD as a switch], and predictably, I got nothing, hence the direct to wall-outlet approach as a last resort.

Any ideas?

 

[smartin1612]

The wiring in those photos is horrendous. A little knowledge us a dangerous thing.

We've gone over this haven't we.
The wiring in those photo's was quick, temporary and connected to DC, not mains

 

[mainline]

But as long as they're willing to learn, thats all that matters.
Its always a difficult moment having to fire someone who is unwilling to improve their skills despite multiple opportunities and support; from my perspective as the team manager, sometimes it can really hurt, as though I've somehow let them down.

Willingness to learn is all well and good, but I would say listening skills and a decent teacher are more important.

 

[mainline]

The wiring in those photo's was quick, temporary and connected to DC, not mains

DC ?

 

[smartin1612]

Willingness to learn is all well and good, but I would say listening skills and a decent teacher is more important.

Sadly in my industry, you're on your own - once you have your maths or economics degree that is.
Afterwards it's self-tuition and a mixture of online and live-sat exams

 

[davesparks]

We've gone over this haven't we.
The wiring in those photo's was quick, temporary and connected to DC, not mains

Earlier you said it was connected via an inverter? This implies that it was connected to AC at mains voltage supplied via an inverter from a DC source.

In which case that would be mains voltage on those incredibly poor connections exposing you to unnecessary risk.

Reading this thread it seems you have gone through a lot of hassle and created a mountain out of a molehill for the sake of a cheap and nasty lampholder.

A little bit of forethought and you could have avoided the whole episode by sourcing something a bit better quality in the first place.

 

[MJPD29]

How is it connected to dc? Temporary or not it should be done properly and safely. Your wiring is extremely dangerous, just pay someone who actually knows what they are doing to do it properly.

 

[Dave OCD]

Thank goodness the problem wasn't in a multi-lamp fitting, we'd be here until Xmas 2023.