Search results

Deleted - double post :)

Bernard, why stop there? Why not do away with earthing all together..........and at the same time remove the requirement for bonding. No more electric shocks and no more confusion for people who can't grasp the difference between earthing and bonding. All you need is an isolating...

In theory, is that not just as likely to happen even with a 'non-loaded installation' - regardless of 'earthing system'. My thinking: All MCBs off so no load. Neutral-earth fault on one circuit. A neighbour's installation pulling 40A load.......some of that must travel up your neutral...

You're actually serious, aren't you? Get an electriian in and he'll know the answer to all those questions. It's going to cost you more by doing it yourself, because you'll have to notify 'building control' before you commence work......there goes half your £500. :) .....and then you...

I'd say you have a 'neutral - earth' fault on one of your circuits......could be any circuit, by the way. Easy enough to find with some test gear. :)

Why is it that some 'sparks' think that, just because they are fully qualified with 'x' years of experience, they are exempt from building regulations and the law? The 'Building Regulations' and 'Part P' have nothing to do with electrical qualification and experience. To the OP: If you...

Which is why we have all agreed that fixing screws, (being 'exposed conductive parts') require earthing - whether that's achieved by 'earthing' the back box or 'earthing' the metal faceplate doesn't really matter. But a back box, itself, does not require 'earthing' - there is no reason to do...

What has 'Earthed Equipotential Bonding' got to do with 'earthing' a back box? A back box does not require earthing - unless you want to show me a regulation that says it does.....'money where your mouth is' time! :D

No it's not. You have to understand what you are doing and why. The regulations require that 'exposed conductive parts' are earthed. A metal back box alone is not an exposed conductive part - so does not require an earth. If the screws connecting the faceplate to the back box are...

Hi, From the 'Electricians Guide to the Building Regulations' :- Page 61 vii Socket outlets supplying appliances pushed under a work surface, e.g. dishwashers, tumbledryers and fridges, should be accessible when the appliance is pulled out. viii Appliances built into kitchen furniture...

Yes, it can - but don't tell the DIYers, it'll only confuse them or get someone hurt........20A protective device , please :)

Are you sure they can't be switched elsewhere as well. If not, and that's your only switch (2 gang two way), then do this. I've ignored the CPCs (green & yellow) in this description to keep it simple......I'm guessing you'll know where they should go. At switch (Three core & E): a -...

I'm guessing you meant 411.4.4 - or are you quoting from a different book? :) In other words 'earth fault' - nothing to do with 'Overcurrent' protection. I think what you meant to say above is: 'Overcurrent' protection comprises 'short circuit protection' and 'overload protection'...

The requirement is to avoid unwanted tripping due to excessive protective conductor currents - so I suppose ensuring the RCD won't trip at less than half its rated current goes some way to prevent this. It's no good if it's going to trip at 2mA. :)

Hi, The correct answer is C Your RCD test procedure should include 180 degree test for 1xIn and 5xIn. RCDs used for earth fault protection are required to disconnect in 0.4s at 230V (TN systems), so there is no need to test them at 5xIn if 1xIn will disconnect in 0.2s. - does that make...

After this comment :- ....maybe you shouldn't even be changing pendants! :o

So, Dimmer, your next question should be 'Why don't we supply the whole house like the shaver socket then, and eliminate the 'shock risk'........i.e. no reference to earth, no path to earth, no shock risk. :) :)

They rarely have a neon, (although I know some do). The light switch shouldn't turn off the neon in the fan isolator - only the isolator switch should do this. I've never used one with a neon but I'm guessing that it's supposed to be bridged across the permanent live and neutral (as opposed...

So you're building double wardrobes and thought you'ld let your socket out of the closet at the same time?? :) No wonder he's single with a room mate like you. :lol: How do you know that this 'gay', single socket is on a ring, by the way?

I'm not getting how something 'plugged in' is causing a rise in the resistance reading on a R1 + R2 test. Anyone care to explain??