Hello all, I hope you're all keeping well.
I have a question regarding insulation resistance testing.
Whether doing a single circuit IR test or a global IR on an entire installation, I usually try to remove all loads, eg lamps, neons etc, but obviously this isn't always possible. So I...
Downstairs lighting is tripping rcd.
Circuit has 4 chandeliers with multiple bulbs and led downlights in the bathroom.
Can I just test IR on 250v setting between L,N & E and expect the same results as testing with 500v.
Evening all,
as I’m preparing for my Inspection and Testing exam, I wonder if you might put me straight on something please?
When performing a global insulation resistance test at the CU, I would link the L busbar to the N bar then afterwards to the E bar. I understand that the circuit...
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...
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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...
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...
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...
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...
Evening chaps,
In the process of taking my 2394/2395 testing course and just trying to fully get my head around insulation resistance testing predominantly in occupied domestic property's where it isn't possible to dissconnect all loads from the circuit.
I am aware of the need to link out the...
Hi everyone. I'm looking for advise on how to test IR on commercial lighting. There's so many lights on 1 circuit , do I have to take out all the lamps in all the lights to perform the test or can I simply test between LN -E ?
Even though I have spent lots of time testing domestic installs and...
Hi all
I couldn't find any previous posts on this topic specifically so looking for some advice.
I am adding an external security light for a customer. I am extending the existing downstairs lighting circuit. Normally when testing Insulation Resistance I would test between L-N, L-E, N-E...
Hi all
Am doing 2394/95 at moment and trying to get procedure firmly stuck in head. Thing I'm getting a little bit confused with is with some of the vids/examples online some state to switch main switch on (obviously before supply connected) and others off. My thinking is that you might as...
Hi guys,
i have always wondered when doing insulation resistance testing is there a test you can do to see if there are any loads still connected (ie neons,equipment) to see if the readings are true or through loads connected in the circuit.
Hi All.
I am currently carrying out an EICR in a local hotel. I was wondering how each of you carry out insulation resistance testing during a periodic inspection?
For lighting etc I have used joining live-neutral together and testing to earth due to the unknown possibility of electronics and...
Hi guys,
Could anyone help me Please with the following questions? I have an assignment to do which has a question that states, Insulation resistance testing has been carried out on the installation and the following result obtained:
Live to Live = 195 M ohms
Live to earth = 0.75 M ohms...
I was doing a fuse board update the other day and normally I use duel RCD boards with mcb s but instead I used separate Rcbos due to the customer specifying these. I prefer fitting Rcbos due to just that one circuit is disrupted when there is a fault.
when quoting for the job I carry out a...
Recently my boss and I were changing a fuse board(old to new). It was a shared house and some of the tenants were out at work and their doors locked. Not knowing what they had plugged in, in their rooms we skipped the Insulation Resistance test. Everything else was tested fine. My question to...
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Hi all ran a ring circuit for someone about 6 months ago and when I carried out the insulation test my results were around 250 m ohms for l-n and slightly lower for l-e, anyway didn't think anything of it as we had just plastered all the rooms where the ring circuit went.
Returned to the same...
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