resistance | Page 5

resistance

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  1. G

    leaking resistance _0,450 Megaohm

    Hello, I recently encountered a problem with a washing machine. The washing machine tripped the RCD during its operation . I visited the place, uncovered the metallic parts of the washing machine and I searched for the current leak. I measured a leakage of 0,450 Megaoghn between on leg of the...
  2. Bobby34

    Insulation Resistance testing method

    Good afternoon, apologies if this has been covered before i've not long joined so gradually finding my way around. I have my Part P assessment coming up on a new installation and would like to hear some opinions on how people carry out their IR tests. In guidance note 3 it gives an example of...
  3. J

    Insulation Resistance...

    I am just working through my understanding of the insulation resistance test, and I want to find out the best way to do the combined Live-Earth test where the Line and Neutral conductors are connected (joined, or however it is best described) through one probe of the tester, and the other probe...
  4. N

    insulation resistance test on shower circuit with neon isolater

    On a new install of a shower circuit, with a neon isolater, is it better to use choc blocks to bypass neon isolater or would it be ok to just test live-earth (live being neutral and live combined) and miss the live-live test? If testing just live-earth, would you write it down in details of...
  5. naylorpd

    Insulation resistance test issue

    Back in 2013 I had a Domestic Electrical Installation Condition Report done on my rented property - nothing horribly major but one thing I didn't understand... I had a C3 code for "0 ohms readings for I.R test for sockets & lighting (unable to remove all loads sockets, lighting had electronic...
  6. F

    Insulation resistance testing on eicrs

    Advice or quicker ways for doing i r tests on an eicr generally what I have been doing over the years is live to earth neutral to earth and joining live and neutral together then testing to earth job done but my pal who has recently had his annual nice i c visit said he's been shown a new...
  7. P

    rcd tripping during the night and insulation resistance testing question

    Hi everyone I have a customer who has a RCD that trips during the night and it resets ok the following day it is ok for a week or so then it tips again during the night. has any one any ideas and what is the quickest way of finding out what the cause is. also I need to do an insulation...
  8. T

    How to bypass an RCD and carry out an insulation resistance test on a circuit

    Hi all. I'm a 4th year electrician currently awaiting to finish my trade test. (FICA in Scotland) the only parts I have to pass is the testing part and fault finding. I'm currently studying testing as this is something I have done the minimum of onsite. Could someone tell me how I would...
  9. Axnfell

    Advice Wanted - VERY High Earth Resistance Problem

    I have been doing some tests around our property here and I cannot get the earth resistance test to get anywhere lower than 1.86k, even started tested now up to 30 meters away from the property and still cannot get any lower readings. Any advice would be greatful. Kind Regards James
  10. TonyJohnson

    Can Metrel EasiTest carry out Earth Rod resistance test on TT System?

    Hi, I have a truck container cafe with a floating generator for power. I am fitting an earth spike to the generator and also an earth spike to the steel container. I then need to measure the TT system i have created but i only have a Metrel easitest.. Will the tester do the job and if so how do...
  11. M

    want to complete nvq on the path of least resistance !

    I have everything except nvq and am2.Maybe half of photo evidence for portfolio.What are the best companies to go for that will do most of the work for me. I know I have to get the photo evidence.Its putting it altogether and time.i am doing the nvq at college and its begining paid for but to...
  12. D

    insulation resistance question FICA

    Hi yesterday I sat my FICA test and during the insulation resistance test I’m not sure if I made a mistake I measured it doing individual circuits I had the main switch at db on but forgot to turn on the mcbs I measured between Line at MCB and earth and Neutral bar to MCB then neutral bar to...
  13. N

    Insulation resistance - strange readings

    Im getting some strange reading on a new circuit(ring main) ive installed and i was wondering if anyone else had experienced the following. insulation resistance at 500v on L-N is >500mQ (which is fine) then insulation resistance between N-E starts at 400 then climbs to 500mQ then insulation...
  14. J

    Help working out resistance and supply current please.

    hi, I’m doing some revision and I can’t quite understand working out the resistance of a circuit or the supply current. Could some one please help and explain how it would be done please? I have attached a photo of the network and the question. Thanks
  15. S

    NO switch insulation resistance failure

    How often do we usually have insulation resistance failures on an NO switches leading to unexpected starts?
  16. L

    Insulation Resistance test question?

    Hi guys, I have what may seem a basic question. If a cable has been skinned at some point along the circuit would an IR test pick that up in the readings? Many thanks
  17. B

    3 Phase Insulation Resistance Test on motor & TP & N skt help

    Looking for some advice on how to carry out a IR test on a 3-phase motor and a TP & N skt, these are parts of a module I have failed on a test and am looking to see where I am going wrong and what the normal procedure for carrying out this test would be?
  18. I

    Temperature probe with 110k ohm resistance!

    Hi all I have an electric underfloor heating system in my bathroom with a Timeguard TPT88 controller: (TPT88 - 24 Hour/7 Day Multi-Programmable Thermostat | Timeguard - http://www.timeguard.com/products/climate/thermolay-ufh-controllers/24hour-7-day-multi-programmable-thermostat) The system as...
  19. Mark42

    Insulation resistance failure on rubber flex. Why?

    Two years ago I installed some garden lighting, using u/g SWA to Wiska boxes, then 3-core 0.75mm rubber flex downleads from each LED fitting. This week the 30mA RCBO kept tripping. I assumed a luminaire fault, or moisture in a Wiska box, but no. It was leakage across all three cores of one 10m...
  20. B

    Insulation resistance testing

    Hi have AM2 next week and just need some help, 3 phase TP+N board, two way and intermediate lighting circuit with 3 switches obviously and one light, doing a global IR test, the lighting circuit say is on L1, so I’m testing all other circuits at once too do I have to switch my switches for every...

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