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thanks Special Location, appreciate your input, just wanted to be able to complete the necessary forms competently, thanks once again, MEERKAT :-)

so why is this test done? Generally Zs testing of circuits is to ensure correct disconnection of times of CPD's are met, when comparing with the max Zs tables, corrected by 0.8 (rule of thumb) is the Zs at DB test at board 1 done to compare the Zs reading as mentioned previously, to ensure...

thanks everyone, really appreciate your help with this, I am with Andy on this, with regards the test and where carried out, on a single board scenario, however never really measured Zs (that is with the earth conductor connected) at the origin before, so just trying to fully understand how...

cheers Andy, I was trying to find out the correct way of filling in the new generic form, it seems that nobody really knows the correct answer. I remember on the old forms, we used to overwrite on the schedule of test results Zs at DB specifically when there was more than just one board in...

Hi Guy's, still waiting for a definitive answer, could always rely on this site to provide the goods, don't let me down now, in my hour of need!!

Hi Mark, here are some pic's of the RIG I built when I did the 2392, Circuits (1) Lighting circuit with 1 one way light and one lamp, loop system feeding 2 two way and intermediate switch one lamp. (2) Radial power circuit feeding 1 single outlet. (3) Ring final circuit incorporating a single...

Hi, I have been looking in the green O.S.G page 159, and on the schedule of test results for a system with 1 board,  in the space for Zs at DB it has 0.21 ohms, which just happens to be the same as the Ze reading on page 1 of the EIC page 156. Still confused, so is it N/A or is it measured...

Hi Manator, Canoeboy, Would I be right in thinking that a N/A value would therefore be inserted against Zs at DB on the schedule of test results of an electrical system with 1 board only?

Hi All, a few questions on the new amended generic schedule of test results, in the top left corner section there is a Zs at DB space, is this space for the measured value of Zs (Ohmic) of the tails at the incoming side of the main switch? and is this done on board 1 if there is only 1 board...

Hi Ash, Make a small donation to the forum, this will get you access to the downloads area, go to the downloads section, look within the wiring diagrams, you will find, bathroom fan and light switch diagrams, these may be able to guide you, as to how to connect up correctly, HTH (MEERKAT) :)

Hi Danny, BGB page 53, 411.3.2.2 Final circuits < 32A 0.2 sec's BGB page 54, 411.3.2.4 Disconnection time < 1 second is permitted for a distribution circuit and for a circuit not covered by Regulation 411.3.2.2 RCD used for Fault protection 411.5.3, disconnection time shall be that...

Hi Dan, Well done and congratulations!!!! I still have 6 weeks or so to wait till I get my written results, so with a bit of luck maybe I will pass too, C U L8R, (MEERKAT)

HiDan, I think you will find that there will be no observations to comment on, in other words the installation has no faults or deviations, and is in a satisfactory condition. We actually completed the old style periodic inspection and testing paperwork, PIR SOI and SOTR. Paperwork is fairly...

Hi Dan, thanks for the congrats!! SOTR1, Sub main circuit, link Line and CPC at board1, measure at incoming Line, top of main switch and CPC rail at board2, this will be the R1+R2 reading for the sub main (dead test). Insulation resistance do a global on board1, all mcb's on, ensure DB2 Main...

Hi Dan, I managed to pass ok, so chuffed about that, just got to wait for the written results in about 6 weeks time. Lighting circuit is wired in singles in metal trunking, there is a seperate CPC within the trunking, so link out Line and CPC at the DB and measure at the light fitting between...

Hi Doc, Boards are live so you can faliliarise yourself with the circuits and there operation, then you perform a safe isolation, and the dead testing can begin. Familiarisation also helps you to find the items that may need to be linked out (Dimmer switch), and experience and knowledge assist...

Hi Dan, 3 phase boards have 3 incoming line conductors, these need to be incorporated in our testing, remember that IR testing is a ten part procedure, L1-E, L2-E L3-E, L1-N, L2-N L3-N, N-E, L1-L2, L1-L3, L2-L3, PFC is made up of the highest reading of PEFC and PSCC and this figure is then...

Hi Dan, I have got my 2391 assessment tomorrow, all colleges are different and its probably beneficial to be able to conduct a Periodic inspection and test in a variety of different ways, as long as all the tests are carried out safely. Our college want us to do all the dead testing on both...

I found "Inspection Testing & Certification" by Brian Scaddan (seventh edition) very helpfull, I bought it on Amazon around the

Wams, thats correct (MEERKAT)