readings | Page 6

readings

Recent contents View information Top users
  1. R

    Unusually low R1+R2 readings

    Hi All So I've just extended two circuits and I've got home to type my results up for the certificate and I'm doubting my results, For the R1+R2 for the cooker circuit I got 0.02 ohms and for the ring I got 0.25 ohms, something seems a little off here. Now by my calculations a 6mm cable should...
  2. 5

    megger 12552

    someone to probably point out the obvious please. its a few years old and was last calibrated 2013. I have purchased the elecsa test card to avoid paying another £100.00 to calibrate, but i fear its now buggered. testing on the low ohms range, seems to be all over the place. join the leads...
  3. J

    intermittent RCD tripping.....

    Morning. Recently went to a job with what is a glorified shed, although fully insulated plastered, water tight etc, with a db installed within the unit. Small ring main and four down lights. The SWA supplying the 'shed' running back to the garage, on a 40a mcb protected by a 63a 30ma rcd...
  4. G

    LED lux meter

    Hi peeps I need an LED lux meter that can measure the full spectrum of light emitted. Any recommendations. I also need to convince the 'buyer' and engineer as to why normal meters don't work. Good solid advice please, with some links?
  5. B

    Metrel instaltest giving strange readings when testing single phase voltage

    Hi everyone, I have a metrel instaltest that, when testing single phase voltage always returns a reading of 540 V on L1 L2 L3. This suggests an internal fault that it automatically thinks it's testing three phase somehow. Has anyone else experienced similar faults with Metrel gear? Thanks
  6. E

    Continuity Issues on Meggers

    1720s across the company have developed ****loads of continuity issues over the last couple of years, mine (6-8 months old) has started recently, continuity jumping all over the place etc. Now, mine was functioning perfectly on a job a couple of days ago, in a sheltered place which was like a...
  7. S

    readings?

    Good day. I have recently been involved in an EICR on a property with 15 DB's. The average PFC appears as 90A and the average Ze is 2.9 The system is TN-S I suspect there is an earth fault somewhere which would explain the Ze but why the PFC reading? Each DB is isolated by a BS88 80A or 100A...
  8. Paul.M

    Doing "Work on the Side"

    Whilst in training some of you will be approached by family and friends to do small bits of work, extra socket, light in the cupboard, install a shower circuit etc etc. It depends on your competency on what you can do but other things are involved. No work should be undertaken unless you are...
  9. S

    How to work out average earth electrode value

    Hi guys, im doing revision for 2394 and got a question on getting the average ohms value for an earth electrode test. the readings obtained were 179,181 and 185ohms and they asked for the average. i have checked GN3 but it ain't clear. can anyone give me a method of how to work this out. cheers.
  10. M

    Reviewing test sheets

    Good evening all ! I've been reviewing test sheets lately off sub contracting electricians not in a official capacity as of yet and there are a few items I have noted but would like peoples thoughts. 1. Cooker wired in 6.0 T+E Ref method 101 32a Rcbo surely a Code 2 but no mention in test...
  11. B

    high readings (maybe)

    hi all just to let you know im still training as a spark after the last course i did turned out to be a piece of s**t with not much practical and today i was on a job with my uncle whos my mentor and we got a zs reading from a number of sockets of 106 ohms and when i questioned it i was...
  12. H

    Weird readings!

    Hi I was testing a ring circuit and got some weird r1 r2 readings and just wondered if any one could shed a bit of light as to why as I am a bit puzzled. It is a periodic test! 13 sockets on ring one of which is spur, 2.5 / 1.0 twin and earth! end to ends done at socket as board a bit messy! r1...
  13. N

    0.00 ohms r1+r2 on radial circuit?

    Hi all, I've tested several radial circuits and only getting 0.00 ohms on the r+r2 test (zero'd leads) 2 of the radials only supplies one socket each and are approx. 3 metres in total length. (zs 0.25 and 0.21) Another radial only supplies one socket and is appox. 5m in length. (zs 0.35) The...
  14. S

    Continuity readings unstable using Megger MFT 1730

    Has anyone experienced issues with continuity readings fluctuating on a Megger 1730 MFT when the test leads rotate/move in the instrument as is the unavoidable condition when actually using the tester? I can null the leads but thereafter the reading with the leads connected to each other can...
  15. D

    suspected faulty 6.6kva transformer

    I think I have a faulty 66kva transformer but have little to no experience with them (delta star I believe) Call out due to reported problems from some of the tenants (offices that are rented within part of the building) some RCD protected ring final circuits disconnecting. Investigated at the...
  16. S

    Funny readings continuity of protective conductors

    I'm doing an continuity test on a lighting circuit and I'm getting funny readings I'm putting on test lead on earth and one on switch live then I'm getting a reading of around 1.4 ohms but then when I'm checking the polarity it's shooting up to around 93 ohms but not breaking the circuit as you...
  17. 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...
  18. 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...
  19. 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...
  20. 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...

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

YOUR Unread Posts

This website was designed, optimised and is hosted by untold.media Operating under the name Untold Media since 2001.
Back
Top