tested

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  1. HappyHippyDad

    What could cause my voltage to drop to 28V??

    Evening all.. I have just tested a cable that I had put in place myself for a smoke detector and I am only getting 28V L-N. I am getting 240V L-E. When I first put it in it tested 240V. Since then the builder has been in and put the ceiling up, I'm not saying this is the cause but this is the...
  2. J

    Strange Low Voltage Readings

    Hi guys I've been doing a partial rewire. And I have taken a feed from a light that is fed, to feed a switch in a new extension. I wired up the lights and switch in the new extension but the light would not turn on. I measured the voltage at the light that's not powering up L-N and I'm only...
    • Jamie181191
    • Thread
    • earth light low voltage readings strange tested voltage volts
    • Replies: 16
    • Forum: UK Electrical Forum
  3. mattyevz

    EICR 10% tested, rubber cables and passed?

    Hi Guys, Went to a customers house on Friday to fit some new light fittings ... Only to find rubber cables with no earths. when I informed the customer he explained that only recently it had an EICR and passed . On further investigation I discovered that a 16th edition consumer unit had been...
  4. V

    Puzzled

    Had a really weird situation today. Having installed all the wiring and new consumer unit for a full rewire, I today came to test the last circuit which was the downstairs lights. Tested continuity which was fine as was insulation resistance, upon testing for loop impedance, I got a low voltage...
  5. E

    Different standards different trades

    Hello Sparks I feel a can of worms about to be opened. I am in the lift trade. Electricians are responsible up to the lift isolator and we are responsible for all electrical works on our side, which include shaft, motor room and car lighting and what we term small power (sockets in shaft...
  6. J

    intermittent RCD tripping.....

    Morning. Recently went to a job with what is a glorified shed, although fully insulated plastered, water tight etc, with a db installed within the unit. Small ring main and four down lights. The SWA supplying the 'shed' running back to the garage, on a 40a mcb protected by a 63a 30ma rcd...
  7. A

    Believe it or not this example has supposedly been tested and certified!

    To my absolute amazement the DB and all circuits illustrated above have I am informed been tested to 17th edition standard. How many 17th edition problems can you spot here? I am wary of just how many other issues will be discovered when I start doing a few circuit tests of my own! Though I have...
  8. D

    RCD Tripping

    Hello, I understand there are other topic with similar problems but I thought I would start a topic with my specific problem. The RCD in our fuse box trips random when a laptop is plugged in and the switch is turned on even before the laptop is turned on, this only happens randomly and not...
    • daz-18-11
    • Thread
    • electrician laptop problem rcd rcd tripping tested tripping
    • Replies: 8
    • Forum: DIY Electrical Advice
  9. L

    RCD 0.0s??

    Hi all, Just back from an EICR where one of the RCDS was testing out at 0.0ms for the 1/2, 1 and 5 tests both ways, not had this problem before, can anyone shed any light? Thanks in advance, Loops
  10. S

    RCBO timing too high

    Hi All just done a c/u change fitted with 8 RCBO's and when testing the trip times 2 of the RCBO times were too high (40a 30ma =40.8 ms . 32a 30ma = >40 ms )on X5 ? changed the 2 x trips and retest exactly the same times ?! disconnect the circuits and retest trip times perfect, ok so retest...
    • shocked
    • Thread
    • circuit connected rcbo tested testing times
    • Replies: 47
    • Forum: UK Electrical Forum
  11. M

    Testing a UPS system??

    Looking for a bit if info and advice? Firstly like to say I have never tested on of these systems before but have been asked to do a job with one installed? Am I right in saying that I need the correct software on a laptop to start with??
    • marco86
    • Thread
    • don't software system tested testing their ups
    • Replies: 11
    • Forum: UK Electrical Forum
  12. T

    confused..

    I am only a trainee ( so don't bite too much) a friend of mine called out british gas to fix his boiler.. Whilst he was there he checked the electrics.. Said the earth loop was greater than 200 ohms on the ring main and they should get a spark out asap.. So he asked could i pop down and and have...
    • terry198920
    • Thread
    • confused earth fuse point tested
    • Replies: 31
    • Forum: UK Electrical Forum
  13. D

    Rcd not tripping

    I'm stumped, fitted new cu in one bed house today RCD would not trip using test button or on test. The only time it trips is when a load is put onto socket circuit, or the socket on the cooker isolator, no faults have been found during testing. Its a TNC-S system ze of 0.16ohms IR of >999 on...
    • Doctorsparks
    • Thread
    • connected correct rcd tested tripping worked
    • Replies: 23
    • Forum: UK Electrical Forum
  14. gnuuser

    bm500a megger

    an old navy buddy of mine (visiting relatives in china) sent me an szbj bm500a megger to try out it didnt cost him much it has a digital meter and scales from 250 volts to 1000 volts tested it with 4 different precision resistors and actually got accurate readings of the values. Id have to do a...
  15. S

    rcbo tripping times

    Hi all help please,I tested a6 amp rcbo30ma at board with out load connected the rcd results are 310ms at times 1 and 50ms at times5 so I changed it thinking it was faulty tested new 1I fitted got same results I then rcd tested another rcbo in the board another lighting circuit results are fine...
    • sparkygrant
    • Thread
    • another connected rcbo results tested times tripping tripping times
    • Replies: 16
    • Forum: UK Electrical Forum
  16. C

    zs test keeps tripping rcd

    fitted a new c/u and put a new ring main in kitchen last week ready for my assessment in the morning, everything tested ok and zs tested ok then, sent meter in for calibration check last thursday and picked it up today (megger 1552) certificate says everything passed no adjustment needed, so i...
  17. S

    Testing

    I have recently replaced the DB in a house I completed the installation test on the new board but client also wanted the off peak board tested. Would I need to do a EICR for off board or include test results as part of installation certificate. If it is included what is classed as the main...
  18. M

    RCD not tripping under test

    Hi all. New user, but have lurked around here and used advice in other threads before, but haven't been able to find this problem anywhere, so figured I'd register and give it a shot. I've put in a new dual RCD consumer unit for a customer, went through all the testing with no problems, tested...
  19. D

    schedules of items tested

    Hi all, trying to get my paperwork in order for upcoming assessment. On the schedule of items tested form sent by ELECSA for insulation resistance readings, there is no column for values between neutral to earth, only live to live and live to earth. Downloaded a sheet from the IET and this one...
  20. H

    32a RCBO Failing 5x with >50v showing

    Hi Circuit Info 32a B RCBO Feeding a Combi Boiler through a FCU in the airing cupboard of the bathroom. Tested at 1/2 Passed tested at 1 > passed reading Oo 20.5 and 180o at 21.3 When testing at x5 the RCBO is tripping but my meter (kewtech KT63) is showing fail >50v Im assuming that this...

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