readings

  1. T

    Strange readings when connecting up wall light

    So I'm doing a job and when connecting up a wall light to a single 1.5mm T+E it does not work, there is another wall light that is connected up to another single T+E cable, however this 9one does work. when testing the cable coming out of the wall when connected into a connector block with no...
    • Tomparry94
    • Thread
    • connecting light readings strange wall when
    • Replies: 25
    • Forum: UK Electrical Forum
  2. M

    Insualtuion Resistance - individual circuits V bank of MCBs & RCD readings

    Tested each of 9 new circuits in usual way of L.O.C. and IR, all in theory ok ... CCU is a Hagar split-load dual RCD. 1-4 on RCD1 / 5 - 9 on RCD2 Aware that no requirement for "collective" IR on EIC, just individual circuits. When tested from the outgoing L of the RCD2 to MCB busbar (all...
  3. spud1

    High Earth Fault Loop Impedance readings caused by RCDs

    Hi everybody, I have encountered a problem with EFL (Zs) testing a couple of times recently. I have had unusually high readings for the length of circuit and earthing system type and the increase in impedance seems to be coming from resistance across the line pole of the RCD in the consumer...
  4. N

    High end to end values plus three cables in one circuit

    Hi guys A little advice here would be much appreciated , it's been a long head ache day! Had a ring circuit in a house today with high readings end to end on all three , they where in there 40s , 50s and 60s but got a good r1 + r2 and a good Zs , is this normal to be able to have high end to...
  5. L

    fluke 1652c continuity readings

    Does anyone else have problems with there continuity readings my readings never seem to be stable for example a newly installed ring end to end resistance on neutral and line ill get .46 and then a reading of .04 on line end to end the leads are always nulled and I even check readings on calcard...
    • Lilyrose08
    • Thread
    • continuity fluke leads reading readings while
    • Replies: 0
    • Forum: UK Electrical Forum
  6. M

    Ze Zs and R1&R2 readings of 0.00 ohms.

    A measured test shows a reading of 0.00 ohms. I have always when got this reading recorded it as 0.00 ohms on any test results sheet. As I have always believed it is a reading and must be recorded as such, I have also seen it written somewhere in either the NiCEiC Inspection and Testing Book or...
  7. J

    Megger 1730 erratic readings

    I recently bought a megger 1730 and i`m getting some weird earth loop readings using the no trip function. I know they can be a little higher at times when taking a "no trip" reading as my old 1552 was always a little higher too but these seemed well out... I only got the meter this week (Used...
    • Jaxo
    • Thread
    • earth little megger readings these
    • Replies: 2
    • Forum: UK Electrical Forum
  8. M

    Hate my new job!

    Just landed a new job. It's only been 4 days and I'm about to quit today. The role involves working on gas meters (wall testing). They want me to manually take readings from 20 gas meters on a wall. Each meter has about 15 data information which i need to type into a tablet held by my left...
  9. H

    Trip readings too high on ground fault relay with Toroid sensor......Help?

    Hi there, Have been carrying out testing on some 3 phase sub-DB's that have outgoing supplies to 3-phase DB's for accommodation blocks. My problem is to do with readings I'm getting on a ground fault relay which has been set to 300mA. Basically, the incoming cable to the Sub DB ( 4-core 25mm...
  10. jackhammerJIM

    Surprised by todays readings

    Went to look at wiring a biomass boiler today ... boiler and buffer tank located in a breeze block out building sat on concrete pad . PME earthing system , existing supply to outbuilding in 25mm 3core swa . ALL the pipework was in place (copper and steel pipe) connecting buffer tank and...
  11. L

    fluke 1652c continuity readings

    Hi all I keep having problems with my fluke the continuity readings are all over the shop never stable I always check my readings on a calcard before testing and when nulled I get correct reading i will test it on calcard 5 minutes later and it's half an ohm out so never know if I am getting an...
    • Lilyrose08
    • Thread
    • continuity fluke leads problem readings socket switch
    • Replies: 7
    • Forum: UK Electrical Forum
  12. D

    High zs readings low ze readings

    Hello I've recently been called to a job regarding high earth fault loop readings through out the house they've got an old style mk consumer unit with a 30ma 60a main switch mk LN5760 the supply side of the rcd had good readings and but the load side readings were more than double that of the...
  13. D

    RCDs raising zs values

    Was at a property toady which I've done previous work before including fuseboard change. All i did today was change a few socket plates over for new ones. Took some Zs readings and noticed they were very near the limit of being acceptable ie: 0.92, 0.98 etc. Took a Ze at the board with main...
  14. G

    Acceptable readings for a NEW installation

    OK peeps I have just tested an 185 4 core SWA, and have got readings of 40 Megs on L2 to earth and L3 to earth. Although this is accepatable according to the regs, I feel it is unacceptable as a NEW installation, and indeed there is evidence of water on some of the switchgear, which clearly...
  15. S

    Socket ring readings. R1+R2 approx half r1, r2

    I havent come across this before, wondered if its common and what it signifies in the ring. Remeasured 3 times and got within 20mohms or so each time so pretty sure its not a zeroing the meter thing. 2.5:1.5 TW/E ring. I went around all of downstairs rooms, did min of few sockets in each room...
  16. D

    EICR - high readings

    I am part way through a condition report for a customer. The house is generally in good condition but the electrical installation is quite old. Although the rings are properly installed as ring final circuits, the 2.5 mm t and e cable is stranded and the Cpc appears to be 1 mm rather than 1.5...
    • dan7202
    • Thread
    • eicr generally readings rings
    • Replies: 15
    • Forum: UK Electrical Forum
  17. 0

    Zs readings on TT system

    Hi there, In the process of testing a large property. TT system. Ra is 58.4 ohms so all good. But starting to test Zs and getting readings of 0.18 on sockets? Why would this be?
  18. R

    Ze on 3phase industrial?

    Evening guys, I`m working on a small industrial unit at the moment. Most of my work is domestic and have not come across this before when doing commercial or industrial. The main supply is coming up through the floor and into the main 3 phase service head......along with this is what I would say...
  19. M

    Different continuity R1 and RN readings on ring

    Changing a CCU and reconnecting existing wiring (twin and earth) = did a N - CPC IR test for earth leaks prior to dismantling the old (BS3036) unit for obvious new RCD trips; all ok. However, on ring circuit the continuity end-to-end readings of the R1 and Rn are 0.3 ohms different; 0.41 on...
  20. R

    no cpc continuity on ring final, strange readings !

    Good Evening all, Been at a property today starting intial tests for a board change tommorow. There are two ring circuits, on one of the ring circuits i had an open circuit on the cpc. Live and neutral where fine 0.4/0.4. I started to locate the break by splitting the legs and joining the live...
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