Thanks for the reply John... I already know this but this question was for the guy that made the statement that they doThere is no such regulatory requirement for normal domestic dwellings.
The original version of BS7671:2018 contained a general recommendation that (by implication all) final circuits be protected by AFDDs, but the list of 'examples' of situations in which this might be done included few, if any, applicable to normal domestic dwellings.
In Amd 2 of BS7671:2018, there is again a general recommendation for AFDD protection, but now only for sockets circuits. However there is now also a requirement for AFDDs, again only for sockets circuits, in four specific types of property, namely:
Higher Risk Residential Buildings (defined as residential buildings >18m high and/or >6 storeys, unless over-ridden by local regulations)Houses in Multiple OccupationPurpose-build student accommodationCare homes... none of which are normal residential properties.
Kind Regards, John
Fair enough - and sorry, but, as you will realise, I took it as a genuine question to which you wanted to know the answer. Maybe an emoticon or suchlike would have helped!Thanks for the reply John... I already know this but this question was for the guy that made the statement that they do
Im not worried cheers, glad its done and that nothing tripped when it was doneThey'll come down in price soon enough Tony but nothing to be concerned about as such.
The main purpose is, as you say, when YOU touch a live wire and YOU are the earth conductor for the current to the ground or also to an earthed appliance.The RCD however says 'earth leakage faults' but aside from the obvious situation (such as me touching live and neutral wires or cutting my mower line etc) i dont really understand what it will detect.
Not on its own - unless one of the wires touches something earthed but then other devices also cover that.If a cable is damaged from chemicals or rodents and the insulation fails for example, would that cause an earth leakage? Or if a connection termination came loose?
Better safe than sorry.I dont suppose it matters really with a crawling baby the named benefit of rcd easily justifies the cost.
"touching live and neutral wires" simultaneously will not be detected by an RCD.The RCD however says 'earth leakage faults' but aside from the obvious situation (such as me touching live and neutral wires or cutting my mower line etc) i dont really understand what it will detect.
Having asked many groups of people, many times, over the years, I've so far only come across a couple of cases in which someone has suffered (and survived) an electric shock which caused an RCD to trip, when it is possible (but far from certain) that they would not have survived had there been no RCD.
So have I, but only by touching neutral to earth on SP-'isolated' circuits. Are you talking about trips due to currents flowing through your body?I tripped RCD's several times, whilst testing equipment, ....
.I guess that's a manifestation of You-Know-Who's Law -. although it seems as if your life didn't need 'saving', anyway (unless I'm writing to a ghost !!).but the only time and RCD might prove of real use in saving my life, someone had decided it was a good idea to bypass it.
So have I, but only by touching neutral to earth on SP-'isolated' circuits. Are you talking about trips due to currents flowing through your body?
.I guess that's a manifestation of You-Know-Who's Law -. although it seems as if your life didn't need 'saving', anyway (unless I'm writing to a ghost !!).
Oh i have no regrets, i can add new circuits now that i have plenty of spare CU slots and to be honest the fuse box was 40 years old, i have no way of knowing if someone had stuck a nail between the contacts or something since i never took the cartridges out.I have been known in the past to advocate to customers who were hesitant about RCDs and cost.
"Well if you have a dog and it might save your dogs life you would probably think it worthwhile, more so then for human life surely!"
Its been really educationalSo you were confused because 2 electricians were telling you different things and now you’ve started thread on here and you’ve got 10 electricians telling you different things
So you were confused because 2 electricians were telling you different things and now you’ve started thread on here and you’ve got 10 electricians telling you different things
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