insulation

insulation

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  1. T

    Pat testing - low insulation reading

    Hi all, recently pat tested abit of equipment, it contains 24v power supplies, a frequency inverter, relays and a motor, its on a 13amp plug so requires pat test, however we get a low LN to E reading unless we disconnect the inverter. Reading is 0.9Mohms, is this normal or should you still...
  2. A

    Insulation resistance results weird on actuator circuits

    Interested in people's thoughts/experience here. I've just been testing out the insulation resistance on a 20 year old surface water pollution control facility. It has a large number of penstocks with Auma actuators. Here's the puzzle: on a few of them, the resistance - although passable - is...
  3. KeenPensioner

    Insulation Resistance

    As an adult learner I understand that any equipment connected to a circuit that may be damaged by the IR test voltage should be disconnected. I watched an electrician carry out an EICR on a property I rent. On a ring final circuit he removed the plugs fom the sockets before carrying out the...
  4. A

    Insulation resistance problem

    Hi all, Stuck on another job here IR testing. It's a simple 3 bed semi and after short put L-N at board and testing to earth, I'm getting 0.16 Mohms. I've disconnected main incoming neutral, no surge protection of any kind in the house, I've taken out all lamps and plugged out anything I...
  5. R

    UK Powered speaker tripped circuits four times over a couple weeks, insulation tester result seems ok, need advice.

    Hello, stating I am not an electrician, I have purchased a fairly expensive set of used powered studio monitors and I’m concerned about one of them. I was switching the power switch at the back and I’ve switched it off quite poorly where it went back on itself and as it was half way between on...
  6. N

    UK Induction Hob

    I am PAT testing an induction hob. It passes the Earth test, but then fails on the Insulation Test. Item is about 3 years old, no damage to unit or cables both inside and outside....Any thoughts
  7. S

    Insulation test L to E long length of SWA

    Insulation test live to earth = 0.7 ohms. This is a long length of buried swa cable (approx 100m) from mains in to submain. Test done with live and earth disconected at main and with switch off at sub main. Question - is this an accurate reading or am I misding something. Its a big job to...
  8. C

    Moving cables and sockets/switches over insulation

    Hi, I'm about to reroute cables and sockets/switches from the ceiling down to the socket height after insulating a wall. I understand this will derate the cable, so what it the best way to do this please? EDIT: Should be in DIY Camerart
  9. D

    Insulation testing problems

    Hi all, if I’m getting an insulation reading of 0.03 across N & L on a lighting circuit what would cause this? Neutral earth, live earth, are in the acceptable realms.
  10. finsends

    Insulation of electrical power pole

    Hello, I have a fairly big property and to get power to the house, there are several metal poles with the cables running along them. I had multiple issues with lightning strikes and suspect that the lightning hits one of the poles and reaches the house through that route. Additionally, the...
  11. S

    Insulation Resistance Testing Am2 - requires to be tested twice

    Hi, I'm a little confused confused is someone can shine some light on the amendment 2 way of doing IR. I know you have to do one 1st fix at 500V DC and then final one at 250V DC when all cables. What I'm confused about is GN3 states: "...sometimes these cables are terminated without further...
  12. O

    Low insulation reading at 500V

    Slightly strange one this, replaced a few socket fronts in a dining room today, all wiring original but new plasterboard on a studded wall. Its a ring final circuit which does the rest of the house apart from the kitchen. R1 and R2 all ok etc, loop test fine but doing the insulation resistance...
  13. A

    How to do a proper insulation test on an electric motor

    I want to check the insulation of the 3-phase 400VAC asynchronous squirrel cage motor. Motor's stator windings are connected in delta. I've read in some textbooks it is necessary to open motor's junction box and disconnect terminals and remove jumper bars (which are used to establish delta or...
  14. V

    Loft Cables Question Please?

    Hi Everyone, Sorry for all the questions. With he help of a friend, I recently installed some insulation into my mother's loft. Whilst adding the insulation I noticed that a few cables (there are only light related cables in her loft) were tied together with electrical tape, so I spoke with...
  15. S

    Shower Cable and insulation

    Hey all, Ive been in and out of a huge house rewiring as the renovate it for a year of so. Every is thing done and dusted except the downstairs shower. I ran a 10mm from the CU to a stud partition where the Isolator sits and then onto the shower. About 15-20m in total. Ive gone back today and...
  16. sldz1200

    Insulation fluke 1663/1664

    Could someone tell me if it is possible in fluke 1663/1664 to activate the option to carry out an insulation test without having the finger fixed on the test button? I am not referring to the differential test, which I know can be done by detecting voltage and not pressing the "start". I only...
  17. M

    AM2S Insulation Resistance Test on RCBO

    Hello, I’ve got my AM2S coming up and I’ve been revising like mad but I’m stuck on something. I’ve read that it’s a 3 phase board with just one RCBO for the ring circuit. Assuming they want me to do a global IR test, can I take the conductors out of the RCBO, switch it off, and then test...
  18. newfutile

    Insulation resistance problems

    During an insulation resistance test IR at an EICR I measured 0.0014 MegOhms from line to earth. When I disconnected the neutral from the neutral bar it's 116 MegOhms lowest (on the outside bollards). However measuring from disconnected neutrals to earth all read over 200 MegOhms. So it...
  19. M

    Advice on insulated plasterboard around electric cables

    I'm currently refurbishing a room and in the process adding some internal wall insulation. The wall has been stripped and my electrician has completed first fix for new sockets and lighting. The walls are solid brick and as I am installing insulated plasterboards, we agreed rather than...
  20. B

    Should I unclip lighting cables in loft to route over new insulation?

    Hi My 4 bed 2 storey house was extended 2 years ago and completely re-wired, but I am having to upgrade the insulation and board out the loft myself. In the loft the electricians clipped the new 1.0 mm wiring to the joists. There’s no ring, no JBs, it’s LED lighting only and all radial feed. No...

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