I recently cut through the live 240V power cable of a plane the tool is double insulated, the blade exposed and combined both conductors. The supply is protected by a 30ma RCD and 30Amp MCB (10 yera old installation), the RCD didn't trip, it does trip when the test button is pressed. Could it be...
Installing Swa 35MM 4 c,to new school block.
This supply will come of a MPB,nearby,to me the supply to this MPB does not comply.
Concern once again are the size of the bonding conductors realative to the the Main REC supply.
The drawing we have,have no input on this, it’s a Tncs system,& earth...
Hi Guys,
Just wondering what I write on an EICR when I come across different conductors, I have a job with what I think looks like multi-stranded 4mm tinned copper on a ring.
Particularly in the schedule of test results, do I just say it's 4mm/2.5mm and then add it as an observation, is it even...
I visited a client about a week ago, an elderly couple complaining that their lounge, hall and landing lights were all flickering simultaneously with a noticeable buzzing noise. When I arrived the lights appeared to be working ok (I asked them to switch them off until I could attend), so an...
The client has decided that redundant circuits, created by us by decommissioning obsolete equipment, should be, in the first instance, removed completely. If this can be shown to be unsafe, cutting back a metre at each end would suffice.
I seem to remember a regulation that unused conductors in...
Hi all,
I've got a couple of examples of this;
on a domestic EICR.
I'm on the fence with the coding - C1 or C2. There is no copper showing on the live parts - but I wouldn't like to grab it.
I just want to be consistent with this - I mean if it was just bare conductors twisted together...
I've just watched a video on youtube about installing a bathroom extractor fan off of the light switch.
In it the guy says how much easier this is when you use Wago connector blocks rather than a ceiling rose (about 7 and a half minutes in). He's using Wago 3-way lever connector 222 blocks...
Afternoon all.
Can I confirm that a protective conductor in section 16 of an EIC refers to bonding to services etc rather than a cpc of a final circuit?
Just been to a 1981 TN-C-S installation to fit new CU. Both Earth and Main protective bonding conductors are 6mm, which I understand was typical back then. 16mm tails with 60A DNO fuse.
Upgrading earth and bonding is gonna be tough as run up cavity and round the corner, I ain't never gonna pull...
I was at a job on Friday in a big 4 storey house. One of the jobs I was there to do was to add sockets to a bedroom which actually didn't have any at all. The top floor sockets were on there own breaker, a 32A RCBO actually. There were two 4mm^2 T&Es at the RCBO so I initially thought it was...
My aunt and uncle came over today and we got on to the subject of electrics, he had a guy come over to one of his shops to add four new shop light fittings everything was fine and the certificates were issued, but one things my uncle said thats lingered is that the building being over 30 years...
Electrical Safety First’s recent electrical installation safety roundtable focused on open-circuit PEN conductors, which serve as both a protective earthing and neutral conductor. Although PEN conductors within installations have been prohibited for some time now, older ones still remain in, for...
Hi
I am installing a Teletask Micros+ metal enclosure
Is it ok to bring just Live and SW Live conductors though a 400mm by 20mm slot cut in the rear of the enclosure ( sometimes cut in the base )
I know I have to bring L N CPC conductors through the same hole but the N and the CPC conductors...
Any thoughts about connecting main protective bonding conductors into the MET instead of distribution boards?
Watched a spark do it the other day and never really thought about it myself. Achieves the same result so it shouldn't be an issue.
Does it matter which method (method 1 or method 2) you use when testing for continuity of the circuit protective conductors? Or is each method dependent upon which the type of circuit you are testing on ring or radial?
I have been told that test method 1 is used for lighting and radial...
PLW
Thread
conductors
cpc
earthing
lighting
ring circuit
testing
testing and commisioning
Is the continuity test for circuit protective conductors, the same test for ring and radial circuits or is there a different test for each type of circuit?
Also what is the difference between testing for cpc continuity and testing for continuity for ring final circuit conductors?
PLW
Thread
circuit
conductors
continuity
cpc
earthing
ring circuit
testing
testing and commisioning
tests
Is the continuity test for circuit protective conductors, the same test for ring and radial circuits or is there a different test for each type of circuit?
Also what is the difference between testing for cpc continuity and testing for continuity for ring final circuit conductors?
PLW
Thread
circuit
conductors
continuity
cpc
earthing
ring circuit
testing
testing and commisioning
tests
Hello,
Sat my 2395 written exam tonight. Two of the questions caused quite a bit of confusion amongst a few of us that sat and dissected it afterwards. The question was relating to an insulation resistance test on a lighting circuit where it was stated that the fluorescent lights could be...
hi everyone,
I have got a job to do in a local hairdresser to change a consumer unit fed off an economy 7 meter.
My question is do you need to test and notify the works like you would in a domestic dwelling? Also is it mandatory that the incoming services of water/gas are bonded with 10mm...
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