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Ok, so if I did that, and put a twin surface box in, what’s the best answer to give me one switch in the twin box? Would a grid frame fit?

It’s a 3-gang grid plate. 1 switch and 2 blanked out

Tried that but the light is a 60w 1200 x 600 panel and drivers won’t dim it that size

The flushed back box is a 3-gang box so a 1-gang surface box wouldn’t be able to do this

So I have a 3-gang light switch chased into the wall. Only one switch being used.  I need to bring this out into a 1-gang surface switch plate so I can get trunking into it.  the room is grade 1 listed so can’t go chasing as it’s also a hospital. Basically going to make it 2-way.  I can’t...

Yeah, thanks for all your help. i am fully qualified by the way with all the certs but suffered a small stroke recently and my brain isn't working properly. all my books were at home so had nothing to refer to. thanks a lot anyway

What I was looking at was one of the online calculators like below to calculate Kva to amps. 1) enter phase (one or 3) 2) enter Kva 3) select voltage type (line to line or line to neutral) 4) enter volts what I wasn't sure of what one to select for number 3 and why

Yes, it's 37 kva

When working out the amps a machine is going to pull so I can select the right cable, do I need to calculate it using line to line voltage or line to neutral voltage.

No tickets required, I work as a service engineer for cnc machinery and I'm wiring transformers up to 70kva every day, some even bigger. I'm fully qualified electrician but some of the guys i work with haven't got any qualifications and they're still wiring them up

So what size oval tube then for two 2.5mm cables ?

Is oval tube the same as oval conduit ?

So if people don't use capping, what other ways can I cover the cables ready for the plasterer ? I don't want to run onduit

I want to overlay the cables with channel. If I use PVC channel instead of the galvanised stuff, what is the best way to fix it and keep it in place

I'm trying to understand control circuits, perhaps someone can explain properly for me to understand . Why do you not need to earth a DC system? How are the sine waves formed? Is it positive, 0 volts negative? In control circuits for example 24v circuit, what is the difference with cables...

Can someone explain what the term clean volts is in regard to electronic circuits

Thanks for the diagram, very helpful ---------- Post Auto-Merged at 08:46 ---------- Previous post was made at 08:45 ---------- Link doesn't appear to work?

[quote name='Andy

So straight from the light, into an isolator, that's it?

Ive not done one before and have to fit one this weekend. Taking the switched live and permanent live from the bathroom light fixture, I'll terminate into an isolator then into the fan giving me a switched live, a permanent live, a neutral and the cpc. The question I have, do the cables need...