pefc

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  1. S

    Kewtech KT63 lead setup for ze, pefc and pscc

    Hi gents and ladies, I’ve just bought a Kewtech KT63, the instructions aren’t very clear on lead setup. When doing a Ze is this a 3 lead test on no trip setting, using the green blue and brown test leads? When doing PEFC and PSCC is this a 2 lead test on high setting. So the blue/green leads...
  2. B

    Pscc and Pefc

    Can anybody give me the definitive answer to the question of why on TNCS earring arrangement when testing Pefc and Pssc sometimes the values are different? When we are essentially testing down the same path as the earth conductor and neutral are combined? And therefore both share the same...
  3. Lister1987

    Megger 1730 not running PEFC PSSC tests

    As title, select the correct settings L-L L-E on left and As on right, am unable to change mode (2Lo 2Hi etc. Screen comes up with <50v but does nothing else. Any ideas? Runs continuity and IR fine, not tried RCD
  4. B

    Ze=1.87 TT or TN-S?

    Morning all, Looking for some opinions MK Sentry Dual RCD 63/30 CU Fluke 1662 readings... 2 lead hi current Ze= 1.87 Ohms PEFC = 6A PSCC = 0.774kA 3 Lead no trip Ze = 12.95 Ohms Zs at cooker/sockets = 12.56 RCD times are compliant No electrode visible and Gas & H2O 10 mm at board...
  5. J

    Ze & Pfc (Pefc & Pscc)

    I hope someone can help me as im getting different answers off different people 3P & N Supply Ze: Disconnect main earth Set tester to 2 lead high L+PE (is this correct?) test between L1 - E / L2 - E / L3 - E recording the highest reading Ze (reconnect main earth) Pfc (Pefc) Set tester...
  6. K

    AM2 testing

    Hi everyone, a few questions here Ze: In the AM2 is it just a 2hi test between L1 - Earth, L2 - Earth and L3 - Earth. Then take the highest reading out the three? and while doing that take the PEFC reading at the same time? after reconnecting the Main earth would I record my test result...
  7. J

    Ze, pefc and PSCC on am2

    Hi, Could someone who has completed their AM2 please give some advice? When commencing your ze, pefc, PSCC. Do you set your megger tester to high or low. I would normally set it to high for the ze, pefc and PSCC tests? Although, I have been it should be set in low because of the RCBO on the...
  8. R

    How to carry out PEFC and PSCC on a three phase db with a rcd as the supply?

    Ive got my am2 resit tommorow for my live testing and I ran out of time and failed as well as I carried out the ze test on 2 lead high thus tripping the rcd. So now I know for next time to complete this on a 3 lead LOW test and measure ze with earth disconnected etc.. then connect main earth...
    • RyanF
    • Thread
    • carry out pefc phase pscc rcd supply three three phase
    • Replies: 9
    • Forum: UK Electrical Forum
  9. R

    Just had Refresher Course for AM2 Exam is Monday need help with PSCC and PEFC!

    I have just been on the refreshers course for the Am2 exam that I am about to sit on Monday coming. When the tutor was going over PSCC and PEFC. I was confused, completley thrown. So in my head I would do:- I would carry out this test on the Incoming Tail side of the 3 phase board? PSCC:-...
    • RyanF
    • Thread
    • am2 am2 exam course exam monday need help pefc pscc refresher
    • Replies: 13
    • Forum: UK Electrical Forum
  10. S

    PSCC and PEFC using Kewtech KT60

    Hello Lads and ladette's Upon performing PSCC and PEFC on a newly calibrated (as in March 2014) KT60, I m getting a 'OL' reading. This has now happened on several occasions in both flats and houses in different towns. Can anybody help me out..? Cheers,
  11. A

    Is there any way of getting the PEFC if you only have the Ze?

    Is there any way of getting the PEFC if you only have the Ze?
  12. S

    Very high direct zs and pefc

    After adding a SFCU as a spur off a kitchen ring circuit I took a direct Zs reading which was 18.4 ohms / 13A. When I then checked from main incomming tails I took a reading of 17.89 ohms / 13A. Rcd trip tests work fine and within required times etc. As this is a very high Zs, what should I do...
  13. A

    Live Testing - PEFC / PSCC

    After a little bit of advice please We are doing our Dead and Live Testing at college tonight. I am ok on most of it but due to not having much time to practice our live testing I need a bt of advice. Live Test: CCU breaker off Prove VID - Test for dead with VID - Re-prove Ze - remove main...
  14. J

    What the max difference PFC for TNC-S for PEFC / PSSC

    Hi I was wondering if anyone could let me know what the max difference in PEFC and PSSC in a TNC-S system: I ask as I measured PSSC 3.8kA & PEFC 3.0kA and have never seen it that far apart on a TNC-S before. This was repeatedly the case, the tails are 25mm, 1m in length and the EC is 16mm...
  15. S

    Pefc

    Hi just doing some tests on a tt instillation, will be doin 2392 shortly. getting 1A on PEFC, can anyone explain this. the Ze is 174. Any help would be great thanks
  16. D

    Pefc

    Ok i am new to testing, i have a metrel 61557 instaltest.... When testing loop, L - e, i must set to no trip ...correct ? ...ok ....but when i do , i cant seem to obtain a pefc reading..... ? but obviously if i set to (er....loop..) with out no trip lock,.....the rcd just trips and i cant get...
    • daiplayer
    • Thread
    • aus pefc
    • Replies: 2
    • Forum: Australia
  17. S

    High ze reading pefc and pscc

    I have just done a consumer unit change and on testing for Ze, PEFC and PSCC got the following results - Ze - 2.20 (This is very high - what might be the problem and what can I do?) Test with main earth disconnected L-PE 135 KA ( Very high ?) Test with main earth connected L-PE 111...
  18. G

    PEFC - PSCC the same on a TT

    Setting up a temp site board in a little brick bunker, DNO haven't supplied an earth as its an out house. So I've installed a rod and am getting a Ze of 44.7 ohms. Now my PEFC and my PSCC are both 5A's. Why are they the same as its now TT? Should they be the same :confused:. Should'nt the...
  19. A

    Pscc = pefc ?

    TNCS system am I mad went to a house today PME system PSCC and PEFC are supposed to be the same got 4.8kA at main switch and when I did the PEFC I got 7.1kA is this correct and if not what would cause it. Thanks in advance. Chris Sorted just tried the same tests at home looks like my...
  20. H

    pscc, pefc and pfc

    got a submain feeding a consumer unit, bit unsure with the pscc, pefc and pfc pscc would be voltage / resistance of live and neutral cables plus the ze pefc would be voltage / zs how do i get pfc, is this just the highest of the 2 readings? if i was fitting a 3 phase board pscc would it just...

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