Hi quick question, got a newly wired lighting circuit that has had the earths chopped, would be easier for me to run a new earth alongside, is there a minimum size of earth if ran in singles and not protected by an outer sheath, got 4mm in my head but not sure where from!
has anyone got a link/pdf of the requirements for rcd protection in the 16th ed
-more for socket outlets
***sorry if its 25-30 years old- it would be 15th ed right****
Im looking to add 4 new sockets into a garage, there is no live sockets or anything to come off In the garage already so Im looking for something the otherside of the wall to come off of to get my live connection.
I have located a socket indoors which already has two wires already going to it...
I am changing a commercial distribution board like for like, Can someone confirm im correct?
Ive only allowed rcd (rcbo) protection for new circuits or circuits im working on, and noting in my installation cert, that those existing lighting circuits don't comply with amendment 3 regarding rcd...
So an old colleague of mine stipulates that ring main should be protected by 20 amp breakers. Why you ask?
Well he said because a piece of 2.5mm2 can only take circa 26 amps and if the ring main broke at any point it would effectively make it two radials, and it would be protected by a 32 amp...
Anyone know where I can view up to date reference documents etc to acquire the Maximum Zs for distribution circuits protected by 60947-2 MCCB's?
Regards
David
Allright chaps
I have to connect a new Combi this Saturday morning, intending to fit a 3 amp fused switched FCU and take the supply off a handy socket [about 2 feet away and on a RFC not a spur]
The consumer unit is an old MEM with cartridge fuses and there's no RCD, [TNCS system with Ze of...
Hi all,
My understanding is that everything should be RCD protected now, as it is unlikely that all the criteria is met for it to not need RCD protection.
I went to my friends house the other day and the consumer unit had a periodic inspection and test carried out by the local council last...
Hi Everyone,
I have armour cable running from my house to my garage in a new build, it is connected to 2.5 that connects to my consumer unit, can i put a socket before armour cable for my wifes new battery hoover without any adverse effects? its protected by a 16a breaker then runs to garage...
hi extended a 32 amp cooker circuit, adding a cooker switch and outlet plate. extended as it is a 7kw range cooker now situated in fireplace. old cooker now not going to be used.
problem is its on a 16th edition board and is on tt. the cooker and lighting are non rcd protected.
ideal...
Please accept my apologies if this is in the wrong category, and also my ignorance as I feel I should know this but I think the heat has confused me. In the theoretical scenario where you are doing an EICR on an RCD protected circuit, but the Zs for that circuit is actually (just, say) out of...
On dedicated 16amp mcb Wired in 2.5t&e to sfcu (13a fuse) then 2.5mm heat resistant flex. Fuse has popped twice in last 8 weeks etc. Element R 18ohms. all seems ok? Should I just swap sfcu for 20amp double pole switch? haven't clamped to measure the draw yet as didn't have it with me.
Cheers
OK, I've done a search for the above on the forum and I don't really think a definitive answer has been given, so I pose the question for discussion; how would you carry out live tests on an economy 7 circuit where you cannot gain night access?
I pose the following:
1) For non RCD protected E7...
Hi All,
First off.. I'm NOT an electrician and am not about to commence DIY electrical work! Just looking to get clued up before calling a sparky out.
I'm having some work done on our bathroom which involves the fitting of Warmup underfloor heating and I've got an issue in that we have an old...
Quoting earlier today for extra light in bathroom, checked CU, lighting is not on RCD half of board. Pointed out issue to client and discussed it, i.e. bathroom lights need to be moved to RCD protected circuit or otherwise RCD protected if I am to do the work, client says "Oh, the electric...
Client wants (indoor, domestic) socket moved a matter of a few feet, assuming cable is not to be buried in wall, would you say for regs compliance socket must be RCD protected? I know the answer is liable to be yes because it's adding a new socket and decommissioning the old, but just wanted to...
Hi doing an eicr on a tt system, plastic board, bonding ok! It is a split 16th edition board with 80amp 100m/amp main switch which has the lighting, smokes and boiler on. On the other side is a 63amp 30m/amp rcd protecting sockets, cooker and shower. The Ra is 28 ohms.
anyway my interpretation...
Hi there,
I'm a newly trained electrician with limited experience and could really use some expert advice. I've searched through the forum about this but have only managed to confuse myself further. I have been asked to add a double socket to a living room ring circuit. My plan is to spur off...
Hi
I've just got to the end of a job in which I installed a 2way RCD protected CCU supplying 1x50a shower circuit and 1x16a radial circuit which consists of a 13a switched fused spur (outside bathroom) for a 2kw bathroom blow heater.
Typically now the job is finished the customer has decided...
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