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anyone come across this before zs at board 0.28. then when measure zs on rcd side on live and neutral, reading of 0.77. from the same earth...
Hii all I am pretty new to this job and was wondering if somebody could just give me some advice on Zs readings?
What would be most likely the...
Hello
I have just changed a fuse board in a domestic property and have had to install an earth rod as Ze was 1.79k ohms due to corroded clamp...
Hi Iam working on an outdoor public toilet and my zs readings to the circuits are in the range of 62 to 68.5 ,wereas on other simalir units it's...
I have a circuit of only approximately 8-9 metres from a 61009 type B 32A Rcbo to an oven & hob all run in m T&E and have got a Zs result on "No...
The last problem I have to finish the paperwork is that I have a Zs @DB reading from the house CU of 0.31ohms with a Ipf @ DB of 0.74 ka.
On the...
Hi guys,
I had a job this morning to change a faulty shower unit in a flat with a direct replacment. when I had fitted the replacment...
Hi all
with a heathy ZE ..22 on a TN-s system i had a R1+R2 of .40 oh my suprise to find that the Zs was 1.01at the furthest socketrechecked my...
Hi guys, I was measuring the Zs on a small office ring circuit (9 sockets) using a Megger MFT, the results I got on every socket was <0.01ohms &...
Can anyone tell me where i can find the maximum ZS readings for fuses like the ones on the back of the NICEIC booklet for minor works. Cant find...
Please accept my apologies if this is in the wrong category, and also my ignorance as I feel I should know this but I think the heat has confused...
A bit confused as to what the prefered method of testing and recording Zs should be?
I normally do (r1+r2) +Ze and record all the details...
HI Guys, ze at the board on a tt system must not exceed 200 ohms i have 138 ohms lovely.
but when measuring zs at the sockets, lights, etc im...
hi all am i right in saying on tt systems the Zs reading will be a lot higher than the max? and is this exeptable?
Afternoon all,
Just a quick one, When calculating the Zs on a circuit fed from a secondary distribution unit do you add the R1+R2 of both the...
Hi guys had a conversation with the boss in the office after work today about a zs I got on a 32A c type rcbo bs 61009, the earthing system is...
Morning Guys,
Ive done a Zs test on an outside light which is on its own circuit and am getting a reading of 35.8 ohms on no trip mode. Im using...
Hello, I have a small query I am hoping somebody can answer for me.
When completing a MWC following the addition of a socket to a circuit, where...
If you are adding something on a circuit, ie another light, fan etc, when doing the r1+r2 do you get that from the part of circuit you have added...
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