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  1. P

    Locating distance of earth fault in buried swa

    Hi I have a earth fault on a customers drive with 30 drive over fittings. The swa runs past each fitting and has a resin branch joint,with one cable going into fitting. Have narrowed fault down to cable by dismantling fittings etc. Is there any tester or method of measuring from the end of cable...
  2. T

    Selecting In between Nitrile Disposable Rubber gloves

    Confronted with all the presents supplied for disposable gloves, specifically just how does one select which kind to make use of? Nitrile as well as latex gloves both are offered in numerous degrees of density, powdered or non-powdered, as well as sterile or non-sterile. Nitrile gloves are made...
  3. HappyHippyDad

    Fault finding!!!!!!

    Hello all.. I have a problem with a tripping RCBO and it has me stumped! Yesterday I fitted 10 RCBO's into a CU which currently had an RCD main switch. This was a sub circuit from a house CU which feeds various circuits for a cattery. 4 of the RCBO's are for the cattery pens. Pens 1,2,3 and 4...
  4. E

    240 between Neutral and earth but 0v between Line & Neutral

    Greeting Learned folk Why would you get 240v from Neutral to earth and 0v Line to Neutral? I'm getting 240 v Line to Earth. I have around 4 fluorescent luminaires lights not working and am looking for ideas before I start fault finding. Any help or suggestions would be greatly appreciated!
  5. E

    Is there a fault and what is it??????

    Hello lads, Right here goes I get a call of a plumber who's on a job doing a boiler chop..... He calls saying I've just tested the boiler spur and I'm getting strange readings. So being the helpful sparky I am I plod along over to his job I have a quick look at this spur must be 15 years old...
  6. HappyHippyDad

    Extending the equipotential Zone of PME installation.

    I was going to just add on to Voltz's thread but it seemed to come to a natural end but I had some questions. 1. A few experienced members say that you should not extend the (equipotential zone) EPZ of a PME system. Am I right in thinking that this is because of the possible potential between...
  7. O

    Distances between draw-in pits

    Hello All, I've been asked to supply distances between draw-in chambers for a large job. The SWA will be in 4 -8 inch PVC drain pipe under the ground (about 5-6 feet down in places but never above 3 feet). Due to the cable varing in size from 35mm to 150mm I'm thinking a distance of 40-50m...
  8. R

    Ring main IR question from todays EICR

    Hi All, While carrying out a commercial EICR today, I was doing IR testing on one of the ring mains an was getting 0.00M ohms between L/N - and the earth bar at 250V & 500V (cant distinguish what 2 earth wires belongs to the other 4 cores) I have continuity on both L & N legs which are...
  9. N

    distance of sockets to a gas cooker

    Hi all does anyone know any reg that tells you the minimum distance of a socket to a gas cooker ? In my kitchen I want to install a new gas cooker which is 900mm wide. the distance between the two sockets is 910mm. what would be the best way to solve this problem. many thanks in advance
  10. S

    Distance Between Supplies

    I wonder if someone can answer a question for me . We have to install a new dis-board in a property that already has a landlords distribution equipment installed . The landlords distribution equipment has its own service head and earthing arrangement . We wish to install a new supply taken from...
  11. S

    Fridge fan motor windings

    Hope this is the right location to post. I asked my friend to give me the motor that he replaced for his fridge. I checked the 2 terminals with an ohm meter and it showed 470k Ohm. I then used a megger between the same two terminals at 500V and it showed 0.02M Ohm and 20V (short?) Could...
  12. uksparks

    Link between one light fitting and socket circuit?

    Hi, I changed a CU this morning, old 3036 for split board. I had tested it prior, IR etc, few Zs readings and the like, continuity of rings etc, nothing abnormal, even checked for borrowed neutral on light circuit which there was. Anyway, changed it this morning, put lights on one rcd and the...
  13. naylorpd

    Small voltage from neutral to earth on TT system

    I'm building a house in Azerbaijan, with 3 phase mains supply and TT earthing. The main transformer is at least 800m from my house. Whilst doing my final measurements before going live, I noticed a small voltage between neutral and earth. It varies between 2-4V and seems to be AC. It isn't a...
  14. N

    Unexpected reading between Earth and Neutral

    Hi Everyone, Please read ALL of the post below before contributing as the fault is unusual (for me, newly qualified). My client called me out because turning on the lights in her (2009) converted stable block tripped the RCD (this is the main switch in the stable DB). Trying to re-set the rcd...
  15. P

    smoke detectors between floors...

    i have to provide smoke detectors to the flat above the shop (1) and 3 in the shop itself. im going to fit a wireless one in the flat.. so am i right in saying only one in the shop needs to be wireless if i hardwire the other 2? or will i have to fit all four the same..??:dunce2:
  16. V

    Puzzled

    Had a really weird situation today. Having installed all the wiring and new consumer unit for a full rewire, I today came to test the last circuit which was the downstairs lights. Tested continuity which was fine as was insulation resistance, upon testing for loop impedance, I got a low voltage...
  17. S

    Difference between Drivers and PSUs??

    Whatbos the difference between an LED 'driver' and a 'PSU'? I have been steered towards some divers to power some 3w 3v 900mA Cree LEDs (link below) but they still require the equivalent power input from a PSU. So what does the driver actually do...
  18. 1Justin

    odd "earth" cable between 2 PME heads

    I have some works at a small flat (4 properties). PME. Service head has been doubled up by DNO, so that supply cable for the second head exits the bottom and feeds the second. I find a 6mm green/yellow conductor strung between the PME break-outs of the two heads. It looks like the unusual work...
  19. P

    is it a requirement to have a isolator between the supply meter and the fuse board

    Elo, Can anyone help me with some advice please. If an installation has no isolator between the supply meter is they a requirement to upgrade it when doing a PIR, if so what code would it be marked down on the PIR as in both domestic or commercial installations?
  20. K

    stranded core 2.5mm creating continuity. between line and neutral.

    HI all I know neutral faults can be hard to find, different techniques are aways good to learn. I went to a clients house to fix a faults and look at the ability of the house to accept a new modern board. They almost drilled though a cable stopping before they went thought the whole cable. I...

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