loop | Page 6

loop

Recent contents View information Top users
  1. P

    Megger 1552 LOOP test problem <55v

    Hi i just got a megger 1552 from ebay and when select the loop function it bleeps and the <55 v flashes has anyone had the same problem or knows whats up with the machine, i've put new batteries in it.
  2. G

    Martindale EZ2500 E-Ze Test Loop Tester

    Anyone have or used one. My mft often gives odd readings on eli, wondering how accurate this one is...
  3. 1capybara

    Table 41.3 Max earth fault loop impedence (Zs)

    The heading of table 41.3 says it shows " max earth fault loop impedance Zs for Circuits Breakers..... giving compliance with 0.4s disconnnect time of 411.3.2.2 and 5s disconnnect time of 411.3.2.3." 411.3.2.2 is for final circuits not exceeding 32A. 411.3.2.3 is for distribution circuits and...
  4. J

    Strange loop values

    Im I missing something ? been checking 2 x ring finals yesterday and found the following results :- R1 Rn R2 R1+R2 0.36 0.36 0.45 0.18 for length of est circuit r1&rn values seem about right 0.47 0.47 1.38 0.35 cant check length with this...
  5. D

    Loop holes

    I emailed City and Guilds asking did NICEIC check peoples qualifications with them "You would need to check with the NICEIC on what checks they do before they issue a license to trade. Our certificates are not a license to trade, just to show you have the knowledge and have completed and...
  6. R

    Loop tests and RCD's

    Had an old Fluke for years, which has incidentally been faultless . Company purchased a Megger last year however when doing Internal earth fault loop impedance readings are far higher than expected. I.e..example Ze = 0.20ohms r1 + r2 = 0.15ohms Zs should be about 0.35ohms however coming...
  7. G

    Induction loop help plsy

    http://www.canford.co.uk/ProductResources/ig/5653.pdf SIGNET (AC) - PDA200E INDUCTION LOOP AMPLIFIER | Premier Farnell CPC UK hi all doing my first induction loop system basically fire alarm guy advised me on what to do and sent me the above products he told me to run a cable around the...
  8. S

    Checking loop tester readings from a sample socket.

    After calibration of my loop tester,I am considering using a socket in the house for future calibration checks and to connect various low resistances in series with earth via a rotary switch to give a range of readings,and if so what value of resistors?Thanks for any advice...
  9. G

    Earth fault loop impedance

    How does earth fault loop impedance and disconnect time requirements change for 3phase 3 wire 230 volt systems where the phase to earth voltage is 133 volts instead of 230 volts?
  10. L

    Devices on a Communications loop

    I have a question about Rs485 comms loops. How do we wire multiple devices on the same loop? thanks in advance
  11. M

    1 way 2 gang switch operating two lights on dimmer, whole flat lighting loop.

    I have taken out ceiling fans and replaced with chandelier lights wired the same but switch will not work, the l (red) is jumped from L1-L1, and black wire I'm guessing is common, the live goes to first light where I have the three Red cables hooked together, the black from switch goes to brown...
  12. D

    Loop in at switch (Trainee)

    Yeah, this is my first post to this forum. I have been learning the trade for roughly about 8months now, and really only been doing 1st fix to new builds. Now I have been moved to doing 2nd fix, and the problem i'm having is with some on the switches having 6 cables in there. As all the loop...
  13. H

    Loop method using Fluke 1653

    Hi all! I tried to measure earth resistance by loop method using fluke 1653 at MR system (TN) in hospital. But got abnormal results. The primary (upper) display showed 0.16 - 0.2 (loop impedance) and secondary - 0.0 - 0.1 (earth resistance) Is there some limitations using this method? Cant find...
  14. J

    loop impedance tester

    Another question - :smile5: When did the use of loop impedance testers first come about? I tried to google it , but cannot find a definite answer, came up with an LCR meter though? So how would you know the Ze before they came freely available and I guess affordable - just by enquiry at...
  15. G

    Video loop on usb stick

    I've got a customer with a hairdressers, she wants a flat screen installing on a wall, ok fine. She wants a promo video running to showcase her work, is it possible to upload something to a usb stick and have it running on a loop, I suggested perhaps a DVD with the footage on. Any thoughts.
  16. A

    Three plate & loop in methods

    Hi, I'm an electrical apprentice and wanted to know why the loop in method is preferable in industrial applications to the three plate method. I've learnt these methods at college but it seems that people at work think they're the same thing. Thanks
  17. J

    loop impedance on lighting circuit

    Hi everone,I am new to the forum and think its brilliant,I am currently studying for my 2394&2395 and am testing everything in sight with a fluke 1651 multi functional tester.When i try to do a loop test on a lighting circuit,I follow all the instuctions,but i keep getting >2000 ohms,i am...
  18. K

    Light switch two gang, loop through

    Hi, I had an electrician rewire my flat and he never finished. In the lounge I have a 2 Gang Switch, one for the ceiling light and the other for the 5amp table lights. I have two T+E cables running down to the switch. I was told to bridge the Coms to create power for the 5amp circuit. I want to...
  19. P

    Urgent - Earth Fault Loop Paths

    Good morning, I'm wondering if someone could help with explaining EARTH FAULT LOOP PATHS in a competent way for TT, TN-S, TN-C-S systems. I can draw them on a diagram however find it difficult to explain things. I'm currently doing a HND in Electrical Engineering and unfortunately have poor...
  20. H

    Fluke 1651B low current loop test problems

    Hi all, Recently, when needing to test earth fault loop impedance on a circuit with a RCBO/RCD my tester just reads >2000 for evert test, even when I know the R1+R2 and Ze are fine and when added together would be well within limits. Is there something I can do to fix this or is it time for a...

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