Hi guys,
Tested my new kitchen circuit today, all results as expected for a new RFC except the IR between line and earth.
The resistance between line and neutral and neutral and earth is >1000 MOhms as expected, but between line and earth it's in the region of 3 MOhms.
After disconnecting...
Hi to all..have heard some people talk about a basic '1st' test regarding a possible cu change , called a global ir test. I understand that this that this a test performed on all circuits which may assist in determining if a fault is present before delving into the indivdual circuits.
Being new...
Evening people
Right,doing a Periodic on some modular built studios & have a few questions i hope you guys can help me with,IR test on a lighting circuit with a few pir's,the pir's are not accessable,so i'm unable to disconnect then, so when doing a IR test is it right to test Live & neutral to...
During a PIR on a domestic dwelling before a cu change i tested IR on the board found 0.28Mohm between L-N. N-E and L-E were 75Mohm and 55Mohm, isolated eached circuit and traced it to the upstairs lighting. Re-tested on this circuit but still low between L-N, double checked all loads had been...
Could anyone please advise on a IR (250V) reading of 0.02MΩ on the permanent live of an emergency lighting circuit to earth ONLY. Lamps have being removed, but ballasts and batteries are still in circuit? The breaker is mechanically sound and stays on with this apparent dead short to earth...
hi there
need a little clarification. when IR testing a lighting circuit that contains sensitive equipment such as dimmer switches, is it possible to test LN-E and not damage the dimmer switch. i keep thinking that even with this method LN-E will still pass 500v through the switch, or am i...
I have just tested a new kitchen ring circuit - Cable layed a year ago and only now doing 2nd fix, but I have a weird IR reading on the Neutral/Earth test.
Continuity was fine, L/E, and L/N all fine.
The IR reading is around 17 megaohms but after splitting the ring and testing each section...
how do you carry out these tests when the cables supplying the circuits are single core and the neutrals and earths on thier appropriate busbars numbers don't match up? I baisically don't know which cables to disconnect for each circuit so i can test. CHEERS!
hi guys
if you were to carry out a ir soft test between L-N (250v) on a lighting circuit to establish any connected load, if the bulbs had been left in what reading would you expect ? As on the last job i was reading >200mohm with all bulbs left in at 250v, i expected a much lower reading...
what is the point of an IR test? yes i know its to show low risistance on cable insullation [its in the name] and that can lead to short circuit and fire risk, but with the protection we use now wont this show its self eventually. what do you tell a customer in a nursing home ? that his IR is a...
hi, to day in collage we carryied out the IR test. the Q i have for all you experienced tester is that in GN3 there is a diagram of how to carry out the test. but on the diagram the test leads were connected to the eart terminal and N bar with all cables in both bars
to day in collage we...
When i test 1 of the rings in a domestic fit i have carried out the IR test on the L+CPC i get >299 Mohms which is expected so i then moved on to the L+N and got 288 M ohms when i connect the L to L and N to N but out of curiosity i reversed the leads on the test kit and i got < 1 M ohm which...
Hi i've put in a new ring with 3 sockets and 3 fcu but when i do the ir test i only getting
L-E 74
L-N >200
N-E 134
i was going to brake it half way then test then so on
any tips
Hi, quick question for anyone who knows a bit about storage heaters. I was asked to check if an old one was working but it's on E7 and wasn't powered up at time of inspection. Next stage would be to power it up temporarily off the main board, but just for now I removed the flex from the...
Hi,
I'm having a bit of trouble getting my major works certs ready for the NIC chap to look at. My problem is my IR test results. I have replaced CU's in both my house and my parents house and just cannot seem to get a decent reading. Mum and Dad's Lights up/Down and Sockets up/Down all come...
Maybe common sense ,but I'm still learning . Even if you switch the spur off will the neon still ruin your IR reading , they wont be illuminated and therefore not connected or only connected on load side.
thanks
Hi Guys,
Can anyone explain how an IR test works for me please? I understand how to do it and the readings I should get but I'd like to understand why I'm getting those readings please. Probably a pointless question but would like to be enlightened...;)
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