insulation | Page 10

insulation

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  1. F

    Insulation resistance test on a db supplied via a time clock

    Hi guys new to this website just a quick question as it has been a while I have a small 6 way distribution board this only becomes live via a time clock supply wired into it I'm going to be testing this board with a IR dead test on each circuit just to make sure according to guidance note 3 & on...
  2. J

    CTEC intermitant zone fault

    Hello can any body help I have been pulling my hair out for 2 days in a carehome we have a ctec conventional panel that is coming up zone 6 fault the problem is its in fault sometimes for 2 seconds then clears sometimes 5 to 10 mins which is not giving me enough time to properly investigate. I...
  3. J

    Low Insulation resistance readings when connecting final socket on ring?

    Hello All wondering if anyone could shed some light on a problem i have with my IR readings. I recently rewired a house.. took care pulling cables in etc . finished 1st fix, checked cables by looping ring main in connector blocks and doing continuity and IR test . continuity was ok, IR read...
  4. W

    Testing

    Hi whilst doing the split method insulation resistance test. After opening the mid point socket,whilst putting 500v through one of the legs are you supposed to leave the other end in the mcb and if not do u terminate it?
  5. B

    Downlighters in solid insulation in a warm deck roof

    We have been asked to install downlighters in 100mm insulation below a air ventilation space in a warm deck roof. Our concerns are as follows;-- We could use led luminaires but some future occupant may change these for halogen resulting in fire damage The building inspector is not going to be...
  6. O

    A question of insulation.....

    Ok chaps, one of my jobs today was an EICR and when I took the cover off the CU I found this..... So would you code it or simply comment? Thanks and every day is a learning day!
  7. S

    Insulation resistance problem

    Hi all i was wondering if anyone could shed some light on my problem. Came to test a ring circuit today L-L 1.23 ohms N-N 1.23 ohms E-E 1.98 R1+R2 0.73 then i did my insulation resistance tests L-N 500 ohms N-E 500 ohms then L-E 0.00. Nothing plugged in, only a few sockets connected the rest in...
  8. LWS_Electrical

    Light switch stuck to wall

    Hi all, What would you code a light switch that has no box whatsoever? it literally is stuck to the surface of the wall. It seems that it was once installed correctly but then the owners insulated the house with celotex and a plaster skim and instead of cutting in a new box they just pulled the...
  9. D00DY_T00DY

    Dealing with fibre glass insulation?

    Hey guys. After spending the most part of the afternoon in a loft with absolutely loads of insulation. New upon old and being driven insane with itchy and dust was wondering what's your tips for dealing with this Also bought a respirator on my way home. Had to deal with a crappy paper mask...
  10. sjhall

    Megger MTK320 Electrical Test Kit: MIT320 Insulation + LTW325 Loop + RCDT320

    Here we have a compete Megger 320 kit including all cables. Kit is in excellent working condition and was regularly calibrated and checked up until June last year when the calibration expired. I've not shopped around for calibration quotes but I paid from £70 to 90. . Rather than the...
  11. W

    Insulation resistance

    Basic question sorry,just isn't coming to me at the moment. Why can you close the switches foe an insulation resistance test wouldn't that cut off the circuit and not measure the resistance after that switch.
  12. S

    insulation resistance query

    Hi, I'm after a bit of advice. British gas installing a new boiler, refused to install as fault on electrical system. The RCD trips when performing an ELI test. I've had a quick look tonight, TT system, rcd tests out ok. IR was 10 Mohms on all circuits except downstairs socket where...
  13. M

    Shower wire

    How can I calculate ? How do I know what size cable I need? 9.5 kW shower 40 C ambient temperature T+E cable installed in loft space 25m length of run type B breaker In 9500\230 = 41.30A In 42A
  14. yellowvanman

    PA Testing surge protection extension lead

    Try not to do PA Testing but had to do it today! Was doing the above today after a cottage got flooded. Lead didn't appear to be wet, but failed the insulation test @ 0.7Mohms, this was at a test voltage of 250V. Re-tried it with my installation tester at 100V and 50V and got the same...
  15. T

    Insulation resistance query

    Hi, quick question for you all, do u think it is posssible to have an ins res reading of 0.02 on live earth of a lighting circuit which includes em. lighting but neutral earth is above 10 megohms ? There is low voltage track lighting also installed on the circuit. Also can anyone explain the...

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