Electrical Periodic Inspection repair bill

brightontraveller

robby-01 wrote: »

so a bulb popping has never tripped an rcd what crap.Mate you do not no your !!!! from your elbow now tell me is that incorrect.

robby-01 wrote: »

IF you are anything to do with the eca then god help us.
I bet you dont have the ability to fit a plug without first checking in a book first.
I could take issue and rip holes in everything you have written ,I cant be bothered.
In case you didnt read it correctly you do not know your !!!! from your elbow.
I bet you work in local government

You do not have a clue strange how you post to say you cannot be bothered to post...I'm posting to try and help OP make a more informed decision...... this is how an RCD's work simplified for you on the current balance principle, using Kirschoff's First or Node Law. That is the algebraic sum of all the electric currents meeting at any point in a circuit must be zero, otherwise the circuit will be broken.
In a RCD the incoming supply, phase and neutral, passes through an iron core or toroid, which acts as the primary winding of a current transformer? A secondary winding around the toroid is connected to the trip mechanism.
Under normal conditions the phase and neutral currents are equal and opposite so no flux is induced in the toroid and hence no current flows in the secondary winding.
If an insulation fault occurs and current flows to earth, the phase and neutral currents will no longer be balanced. A flux will be induced in the toroid and a current will flow in the secondary winding which will activate the trip mechanism and cut the incoming supply.

If you believe this to be incorrect you should call a QUALIFIED PERSON....

Note the bits underlined so who's elbow and.... do you now know the difference might make putting your jeans and jumper on a little easier you clearly don’t know about this subject…. You must be blissfully happy when you stop leaning you stop earning

big_ste

RCD on a bath fan is a bit ott anyway as its class2 generally so the earth is not even connected so a rcd is pretty useless anyway it will only protect the cable, ok for when a new mirror gets nailed through the cable, thats about it.

brightontraveller

big_ste wrote: »

RCD on a bath fan is a bit ott anyway as its class2 generally so the earth is not even connected so a rcd is pretty useless anyway it will only protect the cable, ok for when a new mirror gets nailed through the cable, thats about it.

BS 7671 reg 701.411.3.3 17th edition .... should be very interesting if you manufactor RCD etc you'll be busy :rotfl:if you think its ott has nothing to do with regs stat on july 1st

Toiletduck

Thanks for all the advice.

It seems that fitting earthing clamps is a DIY job, so I may as well do it myself and just get the electrician to fit a new fuse box unit. I have some questions though:

What thickness wire do I need for the incoming water service, 6 and 10 mm2 seem to be available.

Does it matter where I make the central heating earth connection? The living room radiator pipes pass through the fuse box cabinet so that would be an easy job if I could attach them there.

As I am routing an earth cable from the kitchen to the fuse box for the water supply I was thinking it might be a good idea to route a new power cable for the oven as I'm fitting a new kitchen at the same time. Currently there is a single oven connected to a 13amp plug, I am purchasing a new single oven so I guess this will also wire via a plug, therefore perhaps it isn't strictly necessary? Could I just run a separate cable to plug socket in the kitchen to be used by the cooker using a suitable thick cable which could be used for a double oven in the future? Or is this a bit pointless? It just seems worth doing at the same time I have the floorboards up for the earth cable route.

And one last thing, is it permissible to use pipe boxing to route cable through? It would make this job alot simpler!