That's what irresponsible bodgers do
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- Thread starter MarcoM
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That's what irresponsible bodgers do
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Then, please, please, please tell us what you do.
I would only do the testing on a very cold day, and on a very short day - mid december, I would start about 3.30 pm and then make everything safe for my 5 pm departure. And then return the next day about 3.30pm and do the same, probably take a couple of weeks, what with stumbling around in the dark, bumping into furniture etc. And of course if any other jobs come up, I would abandon the job for a few days.
Customer satisfaction is my middle name.
Apologies for not playing your silly game if you need any more info see BS 7671 18TH EDITION Part 6. loads of text there there that you can pick holes in.
Then we shall assume that you are ripping off the customers.
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I consider putting the two lighting supplies on same MCB/RBCO/fuse is correcting the fault where some one in the past has split the circuit incorrectly.
However one does need to consider what will happen when there is a fault, although many seem to think a RCD does not make a circuit and it is the MCB which makes the circuit, I would not agree, I believe when a fault occurs with a socket circuit this should not cause lights to fail, as to if this is done by using emergency fittings or different RCD does not matter, but if you get a shock due to a fault with an appliance you don't want to be also plunged into darkness.
Testing after installed is all that is required, testing before it is installed however does allow one to inform the client as to any other work which may be required.
There is a requirement if one makes a home technically uninhabitable, you have to find alternative accommodation, however it does not say who has to pay for the alternative. In real terms this means you have to complete the work, one can't simply say I will come back tomorrow to finish the work, so you don't want any surprises, if the work is going to span over two or more days you need to arrange that with the client.
But however well you test before fitting RCD's until fitted one can't be sure there will be no problem, a quick insulation test of all circuits may show it is clear, but when the freezer hits the defrost cycle it may still trip the RCD and your unlikely to identify that type of fault before starting the work.
So the can't switch on power due to earth leakage in fixed wiring should not happen as that is a quick test before fitting, but the tripping of a RCD because some appliance is faulty one can't stop. So only a quick test all circuits together before starting is required.
I agree, but as you go on to mention, that would mean that there was only one lighting circuit for the whole house (albeit not really even an 'arguable issue' other than for stairs - i.e. hall & landing lights).
You may not agree, but BS7671 is pretty clear in saying that 'a circuit' is defined by a common OPD.
Kind Regards, John
Could not the "O" refer to earth leakage current going over a particular limit?
I think probably not in terms of BS7671 definitions ....
... and then ....
... note that "Note" ... the first bit of Table A53.1 seems to indicate that a RCCB/RCD is not an "OCPD" ....
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In the past we had the divide into circuits but many did not consider this referred to RCD's, with the 17th edition it actually referred to the safely of loss of light, it did not form a new rule, it just made it plain that it referred to RCD's.
In the future we may see the same with over current, in that it is made more plain as to what it refers to.
My last house I realised the danger of loss of power on the stairs lights and I fitted an emergency light, this house I have a plug in torch which auto lights with power cut, however the latter is on the ring final so a lighting fuse blowing would not cause it to light, so not ideal.
However it will vary house to house, and one needs to do a risk assessment, is there light from outside which will show way down stairs, and how often does the power fail.
In the future we may see the same with over current, in that it is made more plain as to what it refers to.
My last house I realised the danger of loss of power on the stairs lights and I fitted an emergency light, this house I have a plug in torch which auto lights with power cut, however the latter is on the ring final so a lighting fuse blowing would not cause it to light, so not ideal.
However it will vary house to house, and one needs to do a risk assessment, is there light from outside which will show way down stairs, and how often does the power fail.
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Not really a silly game.. they're simply asking what you would do instead.
Grow up, have a go at reading or get someone to read it for you, it's all quite simple.
Or do you just want to be another stirrer?
How does reading anything except an answer from you tell us what you would do instead?
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