domestic installer inspection

[Paul117]

Hi all. I have my inspection tomo to join NICEIC as a domestic installer.

On my main job to be inspected, a board change, my r1 + r2 doesn't marry up with the Ze and zs. Parrerlel earth path somewhere I guess as r1 + r2 is very low. Does this need to me found to satisfy the nic man or will a knowledge of the situation suffice.

Thanks

 

[telectrix]

hold on. do you mean r1+r2 or R1+R2. different things altogether, like market and meerkat. and what was your reading?

 

[telectrix]

might just be that you are measuring Zs on no-trip. some MFTs will give a higher reading than the true one, due to only pushing 15mA into the circuit.

 

[monkeyelectric]

Hi all. I have my inspection tomo to join NICEIC as a domestic installer.

On my main job to be inspected, a board change, my r1 + r2 doesn't marry up with the Ze and zs. Parrerlel earth path somewhere I guess as r1 + r2 is very low. Does this need to me found to satisfy the nic man or will a knowledge of the situation suffice.

Thanks

Jesus! He won't like that at all, better cancel it asap and sort it out!

 

[Paul117]

Sarcasm mr monkey. It is an mft tester on 2 wire no trip. Could be the cause. Just though the boiler is on the ring could explain it.

 

[monkeyelectric]

Sarcasm mr monkey. It is an mft tester on 2 wire no trip. Could be the cause. Just though the boiler is on the ring could explain it.

Yeah sorry mate couldn't resist, its really easy as long as you're competant and can display your testing skills, he probably won't pay too much attention to the anomoly as long as you've got the chocolate hobnobs out
Just for future reference its R1+R2, r1 is end to end of live on a ring and r2 is end to end of earth

 

[Paul117]

Yeah yeah. Couldn't be arsed to caps lock. P.s fresh pack of hob knobs were purchased today

 

[Guitarist]

Sarcasm mr monkey. It is an mft tester on 2 wire no trip. Could be the cause. Just though the boiler is on the ring could explain it.

You will never get an accurate reading on 2-wire no-trip!
But, as Megger told me, it doesn't have to be accurate on no-trip, as you have an RCD in circuit

 

[Paul117]

Passed!

 

[telectrix]

congrats. and @ guitarist, the meggers give reasonably accurate readings on no trip. i checke mine at home on hi i got 0 95 ohms and on no trip, 1.07

 

[Guitarist]

congrats. and @ guitarist, the meggers give reasonably accurate readings on no trip. i checke mine at home on hi i got 0 95 ohms and on no trip, 1.07

Mine is a bit hit and miss. What firmware are you running tel?