W
WayneL
hi pal can you tell me how to do a earth fault loop test on a ring circuit while it is still live please..?
Ha Ha, dynamite, you blow me away!! (pun intended)
Discuss Live Earth loop testing on light circuits in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net
hi pal can you tell me how to do a earth fault loop test on a ring circuit while it is still live please..?
hi pal can you tell me how to do a earth fault loop test on a ring circuit while it is still live please..?
Hi
How do you by-pass the RCD, surely if you have to go to the trouble of taking the RCD out, then it would be easyer to do Ze = R1+R2
Many Thanks
Steve
I said this before on another thread I am not saying it's right or wrong just this is what the Nikky teach now.
As per Electricity at work regulations," No person shall be engaged in or or so near any Live conductor...." "Unless it is unreasonable in all circumstances for it to be dead".
taking of Zs using probes at non- socket points isn't necessary as it can be gained by calculation, therefore you don't have to test non-socket points with probes, you can use calcs, some may not agree but that is the NICEIC veiw or at least it was last time I was on a course at HQ Dunstable, whether thats an a$$ covering exercise is debatable but that's another discussion
I didn't say don't do it, neither did I mention either Ze or PFC in the post, I was merely reflecting current good practise as viewed by the NIC, at the end of the day it's your name on the cert, so the person in question is entitled to do it how he pleases, and BRB 612.9 says it can be determined by an alternative method that's not a matter of opinion that's a matter of fact, perhaps the IEE as well as the NIC are wrong 'eh
Well i see your point however i have come across this on several occasions do an R1 R2 test at a cooker switch / socket reading was 0.10 ,fine nice reading , then did the Zs and the reading was infinity , the fault was down to a faulty neutral within the cooker switch ,another one was an immersion heater High zs when continuitys were ok Zswas high and that was due agin to a neutral fault in the switch which do not show up when you do your R1 R2 tests or even IR which was detected by doing a live Zs test ,so thats part of the reason we do them , when i do a PIR i will test every socket in the installation with a Zs test it take ages but at least i know the sockets are ok . now these days there is an adaptor for almost (i said almost) every light fitting SES,GU10 Bayonet ES so you just plug yoiur testers into them and off you go still a few that need doing but
I was thinking about the adapters but wondered how you get the cpc connection on a class 2 ? I guess it has a flying neutral clip ?, and the other thing is on an ES the line will be centre N on side on BC the L/N could be on either terminal does that matter to the machine ?
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