View the thread, titled "Eicr" which is posted in UK Electrical Forum on Electricians Forums.

P

Platinum lad

Hi all need some advice when filling out test results on eicr's after carrying out live zs tests do you leave out R1 R2 column as in a lot of cases the measured reading is below ze value do you just make a note that it is a measurement and not a calculation?
any help appreciated
 
whats the issue here...?
if you cant do cross connetions at the board (over congested)...then cross connect at a socket outlet....
or as has been said....limitation...

only need to do end to end for EICR dont need to do cross link connections as the installation has power and polarity can be checked when doing ZS.
 
And in fact, maybe even less than that; ultimately what is to be done is defined upfront, if it is just to do IR tests on one circuit and a Ze, then that is what will be done!! The rest isn't part of the agreement.
 
I was testing as a 2nd year apprentice, so it had barely been covered at college. My 'mentor' taught me to do it like that. But...what do u expect, company of at least 20 qualified electricians and maybe 2 had 2391, but hey as long as boss sat behind a desk co-signed it!!
Umm, it must have been college that taught me right, never would have passed exams otherwise. And since things have been in my own name I don't like to cut corners.
 
I was testing as a 2nd year apprentice, so it had barely been covered at college. My 'mentor' taught me to do it like that. But...what do u expect, company of at least 20 qualified electricians and maybe 2 had 2391, but hey as long as boss sat behind a desk co-signed it!!
Umm, it must have been college that taught me right, never would have passed exams otherwise. And since things have been in my own name I don't like to cut corners.
caus theres some about...that just copy old values down...or make em up....
 
NOT THAT I'M SUGGESTING TO DO THIS......

If you dead test R1R2 on one circuit, then perform a proper Ze test, you know that Zs=Ze+(R1R2). So, the difference between the calculated value and the measured value for a Zs on that same circuit is going to reflect the parallel paths etc. If we call that 'P', then you do get a rough-enough value for R1R2 from Zs-Ze-P.

But you dead test a true R1R2, then get a circuit Zs, and whatever the measured value is is the one that goes in the box.
 
OMG , amazing what's going on , I suppose it's to do with the deskilling that's been eating away at the skills of the job , I suppose in time we will just use a martindale socket tester and forget the readings !!

- - - Updated - - -

OMG , amazing what's going on , I suppose it's to do with the deskilling that's been eating away at the skills of the job , I suppose in time we will just use a martindale socket tester and forget the readings !!

- - - Updated - - -

OMG , amazing what's going on , I suppose it's to do with the deskilling that's been eating away at the skills of the job , I suppose in time we will just use a martindale socket tester and forget the readings !!
 
If you want to TEST to find out if a circuit is safe then you HAVE to go through the tests one by one.
If you just want figures to put on a form to get paid then there are all sorts of ways to cut corners but YOUR name on the form and as a professional it could be a criminal charge if anyone gets heurt or worse.

Zs is a live test to CONFIRM the previous DEAD tests, it should be done on the point tested with the highest R1+R2 figure, it assumes you've actually tested at each connection like it says in the book and if you tabulated those readings then you get a good picture (electrically) of the circuit, bridges in rings etc.
Never have understood why there are no official forms to record your circuit testing results instead of just one on the summary as that just leads to fudging to get done quick as it doesn't ask where exactly on the circuit that reading was taken as it's a summary, not specific. A Ze then a Zs on each circuit, turn off main switch, short the neutral & live bus bars to get an insulation resistance of over 1M ohm and out the door to get breakfast.

Rings are relatively easy to test, radials like light circuits get hard as EVERY switch has to come off to get to the CPC to check continuity unless it's an intermediate but you often can't tell that until the plate is off anyway.
Depends on what type of person you are, not give a stuff if someone gets hurt because you cut corners or someone who takes a pride in their work. Sadly I'd not want to put my name to much work I've had to test and yes I do test my own thoroughly so I pick up my own mistakes.

Get a copy of GN3 Inspection and Testing from the IET. Explains it all better than any third party books.
 
If you want to TEST to find out if a circuit is safe then you HAVE to go through the tests one by one.
If you just want figures to put on a form to get paid then there are all sorts of ways to cut corners but YOUR name on the form and as a professional it could be a criminal charge if anyone gets heurt or worse.

Zs is a live test to CONFIRM the previous DEAD tests, it should be done on the point tested with the highest R1+R2 figure, it assumes you've actually tested at each connection like it says in the book and if you tabulated those readings then you get a good picture (electrically) of the circuit, bridges in rings etc.
Never have understood why there are no official forms to record your circuit testing results instead of just one on the summary as that just leads to fudging to get done quick as it doesn't ask where exactly on the circuit that reading was taken as it's a summary, not specific. A Ze then a Zs on each circuit, turn off main switch, short the neutral & live bus bars to get an insulation resistance of over 1M ohm and out the door to get breakfast.

Rings are relatively easy to test, radials like light circuits get hard as EVERY switch has to come off to get to the CPC to check continuity unless it's an intermediate but you often can't tell that until the plate is off anyway.
Depends on what type of person you are, not give a stuff if someone gets hurt because you cut corners or someone who takes a pride in their work. Sadly I'd not want to put my name to much work I've had to test and yes I do test my own thoroughly so I pick up my own mistakes.

Get a copy of GN3 Inspection and Testing from the IET. Explains it all better than any third party books.
no it dont....
wander lead and a lightmate....
one test lead into the lightmate...which goes into the BC/edison fiting....the other test lead with prod onto the head of the 3.5mm screw fixing the switchfront....
unless of course its a plasterboard box...or a knockout box utilising plastic lugs...
 

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