insulation | Page 3

insulation

Recent contents View information Top users
  1. D

    How do you disconnect neon lights in sockets while doing insulation resistance test.

    Hello everyone, I was just wondering how do you disconnect neon lights from socket outlets when doing insulation resistance test, as this will effect the readings, thanks.
  2. Lucien Nunes

    Low insulation puzzle: what's this?

    Damp here this morning, and the insulation resistance on a piece of workshop equipment seemed a bit low. I could influence the reading by pressing my hands against the outside of one of its controls. That, and the fact it is getting a bit stiff to operate, show that it's time for this control to...
  3. J

    16mm tails insulation

    16mm meter tail cable has a double layer of insulation. What do all think of removing the outer layer of insulation, to make it flexible, when the cable is being run entirely in plastic trunking.
  4. B

    UK Insulation resistance whole board.

    Hi all. Changing a CU in an ex-council flat, pme system, no RCD's, and initially tried to IR test whole board L/N joined to earth, got a reading of 0.28 Ohms. Then did each circuit individually (2 X RFC, 2 X lights, 1 X cooker), L/N joined to the circuit's CPC, and got between 0.25 and 0.30...
  5. KeenPensioner

    Insulation Resistance zero Ohms

    Hi all. As I've said before, I'm not an electrician but an adult learner. I have a second hand Fluke 1653B MFT which is out of calibration but I use a CalCard to see how far out it is and it's not too bad. I've watched a thousand videos on EICRs etc and just want to increase my knowledge - if...
  6. M

    Cables in cavity with cavity wall insulation

    I'm slowly attempting to upgrade and rewire the house I'm in. Started by doing the consumer unit. Got the dno replacing my cable coming as its way past its sell by date. Got a lot of help off guys on here with what to do so thought I'd come back for some more advice The consumer unit is at the...
  7. S

    Electrical wiring in shed & heat damage

    Hi, I'm installing a new shed in Brisbane made with colorbond. Obviously it will get quite warm inside so will be insulating with appropriate materials - probably foilboard. The question I have is with regards to running electrical cabling inside plastic conduit next to the colorbond and/or...
  8. timhoward

    Insulation resistance difference both ends of ring final cct

    Initial fault was RCD tripping, narrowed down to a ring final cct. IR tests on that cct with all loads removed were showing almost zero between neutral and cpc. So I broke the ring apart and eventually found the nail through a cable, and got that all sorted. Now its testing ok in as much as...
  9. J

    Insulation Resistance query

    When doing domestic testing, I spend quite a bit of time removing loads & vulnerable equipment prior to carrying out IR tests- allowing me to test between L - N without risk to vulnerable equipment or getting inaccurate readings. I’ve spoken to a number of sparks who go straight to testing L&N...
  10. N

    UK RCD Trip - insulation problem from too much load?

    Hi guys, first time poster, be easy! I'm caring for a friend and last night while sleeping on the sofa-bed an emergency system that had lost power was sending out a warning signal. Startling to say the least. The RCD had tripped and after some internet sleuthing I managed to isolate the...
  11. S

    Test for insulation damage

    Hi, A rat has chewed through some insulation on a circuit in my house. The cable will obviously need replaced but I can't identify we're along the circuit the insulation has been damaged. Is there anyway to test for this?
  12. K

    Low Insulation resistance test on smoke detectors

    Hi Everyone Just a question bothering me as you cannot do Insulation resistance test on smoke detectors as they can become damaged so obviously smoke detectors are sensitive but they are also installed on lighting circuit so if perform low insulation resistance test 250V between Live and...
  13. D

    Insulation Resistance - Low Reading on Ring

    Newbie Testing Question: I am getting a very low IR reading between L&N on a kitchen ring (0.01M). The ring was working fine with no tripping before testing. Can anyone shed any light on what may be causing this low reading? Thanks
  14. P

    The cost of poor insulation

    I've just tested a sub-main cable running to an old barn. 0.05 Mohms at 250V. Obviously a fail, but the customer says it's fine because it works. As they're clearly not interested in their own safety I wondered if I could make them see sense by the cost. So my question is; How much does it...
  15. P

    Insulation readings

    Hi, I’m confused. I recently carried out insulation resistance test on a 3 phase board I had some weird readings. I removed all vulnerable bits of kit and tested the dead side of the incomer all readings where good a part from L2 which had a low reading of 2.8M ohms. This was much lower than...
  16. J

    Insulation resistance on new installation

    I have recently completed a rewire as part of a complete back to brick renovation in a pretty standard domestic property. Upon carrying out initial verification I uncovered a few strange IR readings. Multiple circuits with low(ish) readings of around 150-200Mohm. However they all tended to rise...
  17. A

    Line & Neutral insulation tape

    Hi people. On my AM2 they supplied black insulation tape with the letters L or N on for tails identification. Does anyone know where I can purchase these please? I also remember they had L1 L2 L3 tapes. Thanks
  18. D

    Is it ok to do insulation resistance test on RCBO at 500v?

    I know you are not supposed to do a insulation test on circuits that are protected by an RCD at 500v because it may damage the electronic components inside the RCD so that's why you switch the RCD off before you test the individual circuits, however, what if the circuits are all protected by...
  19. Z

    UK Equipment excluded for insulation test

    I don’t think there is a comprehensive list of equipment that should be considered to be “neutralised” before doing insulation testing. as a small starter: dimmer switches Pilot lights Equipment with capacitor RCD USB sockets Light bulbs Sensitive equipment ? really appreciate if the list...
  20. Q

    Insulation resistance query old style hager rcbos

    When carrying out insulation resistance testing on old style rcbos (hager) I understand you are supposed to disconnect both line and neutral aswell as both the neutral and functional earth fly leads.....however does this in theory mean you need to disconnect the above for all rcbos at the same...

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

YOUR Unread Posts

This website was designed, optimised and is hosted by untold.media Operating under the name Untold Media since 2001.
Back
Top