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leakage

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  1. T

    Residual Current v Earth Leakage

    I think I must be missing the blindingly obvious, but..... TT system......100ma time delayed as main switch, then some final circuits (which will require 30ma RCD as includes sockets etc)...then 30ma RCD for other final circuits... Prior to changing CU at customer's request to include 100ma...
  2. B

    Use of Earth Leakage as Condition Monitoring

    Monitoring or evaluating earth leakage on installations should be a great tool in our fault finding skill set. Would people like to contribute some of their experience or thoughts to build a thread of our collective knowledge. As a starting point it's easy to assume that you would focus on the...
  3. nowaypedro

    Earth leakage - no load

    Called out today by new owners to a domestic 3 bed semi with history of nuisance RCD tripping from day 1 (lived there about a month). TNS. No dual supply. No regular pattern to tripping. Most appliances new. First - Ramp Tested RCD unit with no loads = 25mA (can live with that). Popped...
  4. MJPD29

    Multifunction tester/ earth leakage tester

    Hi guys I have been looking at buying an earth leakage tester as it seems to be a useful piece of kit to have in my collection if anyone could recommend any which would be good quality? I am also using a borrowed mft as sadly mine kicked the bucket and I'm torn between megger and fluke if anyone...
  5. M

    Earth leakage tester

    Thinking of getting a earth leakage tester , any reviews of any you own would be appreciated (the cheaper the better ) .
  6. BigSpark

    Earth Leakage Tester

    Hi, im looking for a bit of advice on what kind of earth leakage meter i would need. I will be using it mostly for domestic work to help with any rcd tripping issues. Just seeing so many to choose from varing hugley in price depending on make and sensitivity, just dont want to splash out on...
  7. G

    RCD's and large capacitive loads

    Hi all, just registered today and sorry to come straight in with a request for help. I wasn't sure if this would be best in the commercial forum or the domestic one as really it is using comercial type equipment on a domestic ring main. I have 2 large battery charger/inverters in use at my...
  8. T

    Individual RCBO

    Hi I need to check what the electrical requirements (17th addition and Part P) are for RCBO's on a new kitchen extension. Using the existing house Consumer Unit with one 100Amp 30ma RCBO. Do all the different new kitchen circuits i.e Ring Main, Cookers (x2), Indiuction Hob, Lighting...
  9. charlie76

    RCD Random Tripping

    Evening all. Just after a bit of advice. Just been out on a job where they have had Random tripping of one of the RCD's on a split load board. They were told by a previous electrician it was the shower so that got replaced, problem continued. Another electrician said they had a cracked shower...
  10. D

    Earth Leakage Test

    Once asked if a normal Multi Meter could do most of what a PAT tester could (ie saver £££ £350 for the machine an £75 for it to be tested) <Shows how slow i am at recalling things> but some years ago i did 2377-22 and didnt recall it from there. I do own the 3rd Edition Code of Practice for...
  11. V

    Earth Leakage Clamp

    Looking for a decent earth leakage clamp. My last one (Megger) died a few months back and was knocking on a bit but was deemed to be decent when I bought it and it served me well. I haven't had a need for one recently but had a job today where I really missed it. It was never a bit of kit that...
  12. W

    Induction hobs on rcbos

    Hi there customer got intemittant tripping of rcd on new induction hob , got service engineer out under warranty got told by a john lewis engineer that induction hobs need to only be wired on their own rcd/rcbo and not with other circuits like on a split load board 'All induction hobs need to...
  13. D

    Measuring earth leakage

    Is it possible to measure earth leakage with standard CTs and display it on a panel meter? I want to do this for a distribution box for temporary event supplies as I don't find the little bar graph display on earth leakage relays all that useful. Would one large CT around all four conductors...
  14. M

    Monthly intermittent fault

    I've been having this recurring problem where the RCD will trip (the MCBs don't move) causing power failure on everything in house. I can get everything (apart from sockets) to come back on immediately only if the MCB that controls the sockets is flicked down before I flick the RCD switch back...
  15. M

    Metrel MD9272 Leakage testing

    Hi, My new leakage tester arrived so I wanted to try it out, I connected it to the Line and Neutral meter tails and got a total leakage with all circuits on of 8.05 ma, I turned them all off and re-tested individually and found that the first floor ring final was giving the highest leakage of...
  16. J

    Earth Leakage problem

    Hi....I am new here and have a question/problem with an earth leakage tripping. This problem has me stumped and if anyone can help me it would be great. A client called me out for an earth leakage tripping. Was going to do the normal test to isolate the problem but then noticed that almost...
  17. M

    Earth leakage problem with inverter

    Hello all, This is my first post so hope I'm in the right place for my question! I sell single-phase frequency invertors that drive variable-speed borehole pumps, a product from Italy - it's single-phase 230v in and three-phase 230v out from the invertor to the pump's motor. This invertor uses a...
  18. M

    Earth Leakage tester

    Hi, I need to replace my current Tester as it has broken, I have seen this one at my local wholesaler but not sure if it is up to the job. "DI-Log DL6506", I normally buy fluke but cant justify the cost on this item as I don't use it very often but still want something that is going to be able...
  19. mrloy99

    earth leakage clamp meter query

    Has anyone any knowledge on earth leakage clamp meters. As far as I can make out they are identical to a normal clamp meter only with greater resolution measuring down to milliamps rather than amps.What I dont really get is why we dont have them with 2 clamps..one to measure the live and one to...
  20. L

    No so random RCD trupping

    This has been driving me crazy for a couple of years now, I keep thinking I've found the solution, then the problem resurfaces again - random tripping of my RCD. Without going into great depth, my RCD has been tripping on a regular basis at various times of the day with no one consistent...

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