Hi all,
My Aunty had a periodic Inspection done the other day, but was not happy with the service and advice she was given after they had finished. So phoned me to see if I could have a look. I havent passed my 2391 yet, got practical exam next week and theory in June, so I could only advise her on what I found.
So, I got there this morning and saw the sheet they had left, straight away noticed the IR was low, but still within the value stated in 7671. Lowest reading being on the lighting circuit 2.45 Mohm, 7671 value being 0.5 Mohm, ive been taught 2 Mohm or less is cause for concern.
Next was a comment wrote funnily enough in the comments box, stating a open circuit found on the ring with a value of 34.7 ohm.
Everything else on sheet seemed ok. So did a visual inspection around the place and noticed no seal on the Main suppliers fuse, actually fuse casing cracked as the seal had been ripped off.
Also noticed none of the ceiling roses had been disturbed for some time as the paint had not been cracked around the rose up stairs and down? Is there another way of checking continuity on lighting circuits without taking off the ceiling rose cover?
She only wanted me to check out the faults the company had listed. So onto the ring circuit i went. Did my values for r1, r2 & rn, worked out my expected for r1 + rn and r1 + r2, crossed the wires and went round the sockets up and down, as all on same 3036. All sockets except 2 complied with my expected results, the 2 that didnt are on spurs, so ok. Im wondering the fault they said of a high reading on one socket was either a spur or they hadnt nulled out their leads? what ya think? Other thing the tester they used is the same as mine, Alphatek Metrel 61557, has a habit of gettin weird readings as it warms up, needs nulling every few minutes for the first 10 minutes.
So I found the ring complied to 7671 when adding on Ze, and adding rule of thumb.
Then went onto a IR test on the lighting circuits. Disc all lamps, and carried out the test. They got 2.45 and 2.64 Mohms I got 710 Mohms and 694 Mohms. Could this be that they didnt take the lamps out, as my Aunty doesnt recall seeing them take them out?
They did say to her she needs an urgent rewire, think there after a bit of money!
One thing I did advise of is a new modern style consumer, as I found the following:
Shower circuit wired directly into suppliers side of switch? surely this is not normal practice? or is it?
And also a radial socket circuit connected into the ring fuse. defo needs a new consumer me thinks!
Regards,
Gaz
My Aunty had a periodic Inspection done the other day, but was not happy with the service and advice she was given after they had finished. So phoned me to see if I could have a look. I havent passed my 2391 yet, got practical exam next week and theory in June, so I could only advise her on what I found.
So, I got there this morning and saw the sheet they had left, straight away noticed the IR was low, but still within the value stated in 7671. Lowest reading being on the lighting circuit 2.45 Mohm, 7671 value being 0.5 Mohm, ive been taught 2 Mohm or less is cause for concern.
Next was a comment wrote funnily enough in the comments box, stating a open circuit found on the ring with a value of 34.7 ohm.
Everything else on sheet seemed ok. So did a visual inspection around the place and noticed no seal on the Main suppliers fuse, actually fuse casing cracked as the seal had been ripped off.
Also noticed none of the ceiling roses had been disturbed for some time as the paint had not been cracked around the rose up stairs and down? Is there another way of checking continuity on lighting circuits without taking off the ceiling rose cover?
She only wanted me to check out the faults the company had listed. So onto the ring circuit i went. Did my values for r1, r2 & rn, worked out my expected for r1 + rn and r1 + r2, crossed the wires and went round the sockets up and down, as all on same 3036. All sockets except 2 complied with my expected results, the 2 that didnt are on spurs, so ok. Im wondering the fault they said of a high reading on one socket was either a spur or they hadnt nulled out their leads? what ya think? Other thing the tester they used is the same as mine, Alphatek Metrel 61557, has a habit of gettin weird readings as it warms up, needs nulling every few minutes for the first 10 minutes.
So I found the ring complied to 7671 when adding on Ze, and adding rule of thumb.
Then went onto a IR test on the lighting circuits. Disc all lamps, and carried out the test. They got 2.45 and 2.64 Mohms I got 710 Mohms and 694 Mohms. Could this be that they didnt take the lamps out, as my Aunty doesnt recall seeing them take them out?
They did say to her she needs an urgent rewire, think there after a bit of money!
One thing I did advise of is a new modern style consumer, as I found the following:
Shower circuit wired directly into suppliers side of switch? surely this is not normal practice? or is it?
And also a radial socket circuit connected into the ring fuse. defo needs a new consumer me thinks!
Regards,
Gaz
