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
Just done my first 2 timber frame New build.
What is the reference method for cables installed in Timber frame walls full of insulation >100mm????
I’m an Industrial electrician and as such have limited knowledge of domestic installations (we all still use the same regs though). I’m wanting to know what people do about the increased insulation in lofts.
For example my shower is a nominal 9.5kW with a 10mm T&E cable If I was to install the...
Is this right anyone?
So basically I'm gonna test the whole consumer unit with an insulation resistance test rather than every circuit would you do basically I need to show my college and I've only been testing since last week and need to show an insulation resistance test of the whole board and...
Hi I want to test the whole board at once with an insulation test so turn off main isolator and breakers turn tester to 500v? And is the best thing to do, the incoming tails L+N put in a link between them and connect your probes to the link and other to earth also can you still operate light...
Hey Guy's,
I had a client ask me last week if I do Pat testing and without thinking first I said yes! However some of the equipment he has is very old (40+ yrs) and American. I haven't agreed to do the job and I told him straight I would have to find out what is involved with testing them first...
Deanoss
Thread
american
attach
insulation
machine
testing
transformer
Hi folks,
Was sent out to a job today to add in a hot water pump underneath a kitchen sink in a kitchen that had recently been done up. Took with me just a socket thinking that the electrician doing the kitchen work would have RCD'd it - but no. The woman had her own joiner do the work so I'm...
Hi all,
I have done an insulation resistance test on a ring final circuit today and when I do L - N I'm getting 0.01Mohm. Checked all sockets for loose connections but found nothing. I plan on splitting the ring tomorrow and testing each individual length from socket to socket. It's gonna be a...
Afternoon all been a while since I've posted.
at today's job I noticed 10mm meter tails with 6mm bonding and although my first thoughts were tails should be min 16mm and bonding 10mm
so at the risk of sounding stupid I couldn't find the exact reason why this was wrong as the 10mm would take...
Hi guys new to this website just a quick question as it has been a while I have a small 6 way distribution board this only becomes live via a time clock supply wired into it I'm going to be testing this board with a IR dead test on each circuit just to make sure according to guidance note 3 & on...
Hello can any body help I have been pulling my hair out for 2 days in a carehome we have a ctec conventional panel that is coming up zone 6 fault the problem is its in fault sometimes for 2 seconds then clears sometimes 5 to 10 mins which is not giving me enough time to properly investigate. I...
Hello All wondering if anyone could shed some light on a problem i have with my IR readings.
I recently rewired a house.. took care pulling cables in etc . finished 1st fix, checked cables by looping ring main in connector blocks and doing continuity and IR test . continuity was ok, IR read...
Justintime
Thread
conductors
connecting
fault
final
insulationinsulation resistance
readings
resistance
ring
socket
sockets
testing
We have been asked to install downlighters in 100mm insulation below a air ventilation space in a warm deck roof. Our concerns are as follows;--
We could use led luminaires but some future occupant may change these for halogen resulting in fire damage
The building inspector is not going to be...
Ok chaps, one of my jobs today was an EICR and when I took the cover off the CU I found this.....
So would you code it or simply comment?
Thanks and every day is a learning day!
Hi all i was wondering if anyone could shed some light on my problem. Came to test a ring circuit today L-L 1.23 ohms N-N 1.23 ohms E-E 1.98 R1+R2 0.73 then i did my insulation resistance tests L-N 500 ohms N-E 500 ohms then L-E 0.00. Nothing plugged in, only a few sockets connected the rest in...
Schoe1
Thread
insulationinsulation resistance
problem
resistance
Hi all,
What would you code a light switch that has no box whatsoever? it literally is stuck to the surface of the wall. It seems that it was once installed correctly but then the owners insulated the house with celotex and a plaster skim and instead of cutting in a new box they just pulled the...
Here we have a compete Megger 320 kit including all cables.
Kit is in excellent working condition and was regularly calibrated and checked up until June last year when the calibration expired. I've not shopped around for calibration quotes but I paid from £70 to 90. .
Rather than the...
Hi,
I'm after a bit of advice. British gas installing a new boiler, refused to install as fault on electrical system. The RCD trips when performing an ELI test. I've had a quick look tonight, TT system, rcd tests out ok. IR was 10 Mohms on all circuits except downstairs socket where...
How can I calculate ? How do I know what size cable I need?
9.5 kW shower
40 C ambient temperature
T+E cable installed in loft space
25m length of run
type B breaker
In 9500\230 = 41.30A
In 42A
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