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Hi - no offence taken :wink: Yep I am competent enough to do the electrics, just wanted a second opinion, 'cos the customer is quite insistent and I keep telling her I can't do it. I am fully aware it is 230V before the transformer, but if the idiot electrician who fitted the 12V ceiling...

Thanks for confirming that. Had thought of using the lighting but the circuit is 12v low voltage.

Could someone just confirm this for me? My customer wants me to install an illuminated mirror in her bathroom but the nearest, and only, electricity supply is the shower. I have told her I cannot take a spur off this feed as it is a dedicated supply to the shower. Am I right in saying this...

Time to test! Cheers

OK, I have taken your advice and acquired a digital multimeter. However, I would appreciate someone confirming which settings I require before I test anything. I am aware that the black probe/lead goes in the COM hole and the red probe in the V hole, but where do I go from here? Thanks.

"The 45Amp switch and pull switches you describe sound like they are dual pole and therefore should disconect the power - in this case at two points." Yes, they are, and no, they are not disconnecting the power, therein lies the problem! "The tester you have described is not really suitable...

I appreciate using a standard voltage tester is not as effective as a meter, but nonetheless I would not expect the LED in the tester to light up like a christmas tree when I touch the ends of the wire, bearing in mind both the 45A and pull-cord switches are turned off :?

Hi, thanks for the quick reply. Apologies for the slightly confusing message! I was referring to the Live and Neutral terminals inside the 45A fused switch which are marked as "mains in". Because the original supply was not long enough to reach the new pull-cord switch and a junction box...

I'm installing a new bathroom suite for a customer but they arranged for the electrician to come in and sort out the electric supply for the shower. However, I am a little concerned as to how safe he has left the wiring for the new shower and, not being an experienced electrician, I would...

The shower doesn't work at all and the power is off, so it looks like it's cooked. Also, found out today that the live and neutral wires from the shower had literally "fused together" inside the CU at the point of the neutral terminal! Hence the "bang" and the blackened on/off switch and melted...

Thanks for that, a useful bit of info - it's definitely a 10mm and I did see 10 stamped on the cable too.

True, but would it not be odd for the cable to start playing up after a trouble-free 12 months? Having looked closely it was obviously brand new when it was installed a year ago.

It's a 9.5kw shower and the cable is definitely 10mm. I have to question why the electrician that fitted it did not replace the older fuse box with a proper MCB/RCD shower consumer unit, which the product instructions clearly said he should have done to comply with the warranty. Anyway, that's...

Thanks for the tip, must admit I was beginning to suspect the shower and I think you may have confirmed it. Haven't checked to see if there's any flow without power but can do it tomorrow. Cheers.

Has anyone got an suggestions at all? PLEASE!

It is an old, single "rewireable style" fuse box which has had a modern 40A MCB stuck in it! There is no RCD enclosure that I see of. I guess there may well have been a problem with the box, as you say the fact there used to be a nail in the fuse carrier could be a hint! Anyone else...

The MCB.

I was working at a customer's house yesterday (doing plumbing not electrics) when the customer asked if I would look at their Triton shower that was playing up. A year after it's installation, it has started tripping the MCB, but with a loud bang too, not just a simple trip! Apparently, the...

Steve/ColJack Thanks for the advice guys - all sorted! I have one happy customer (the wife!) thanks to you :D

You could be right in that the the 3 core from the single switch goes to the other downstairs switch, not the upstairs one. That would make more sense. If I don't have any joy with the tips you chaps have given me, I'll try and upload some photos. Thanks for the replies everyone. I'll...