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  1. T

    Star Delta motor into DOL starter?

    Hello everyone. I have a new star delta pump (7 core flying lead) that has to be made off into a DOL single contactor starter. Is this possible and does anyone know how?
  2. T

    Shower tripping sockets rcbo

    On call and the socket rcbo is tripping when the shower gets turned on.i have traced the shower cable and it goes from db to switch to shower.there is nothing connected into the sockets it is on a 40 a rcbo the sockets are 32a The socket rcbo trips but the shower one doesnt. Any thoughts?
  3. mrloy99

    Insulation test

    Hi All.Bracing myself here for torrents of abuse. Is there any reason why an I.R. test can't be done at a socket rather than at consumer unit.
  4. westward10

    Clipsal rcbo.

    Tested a Crabtree Polestar board today full of Sector rcbos, tested many of these boards and never seen this. The only Crabtree devices were two mcbs but the Sector devices are identical to Crabtree devices. Out of the nineteen four failed which is something you don't get with Crabtree rcbos...
  5. N

    Alba car radio

    A very strange problem..replaced my stolen car radio with a new Alba car radio , connected the universal ISO connectors with no problem. Engine OFF radio works perfectly, however Volume control does not work when the engine is RUNNING...(obviously voltage exceeding the 12 volts with the...
  6. V

    Dangerous Work Exposed!

    Hi Guys, Have i been to a hum dinger of an installation today! Are we sitting comfortably then i'll begin. An electrician i was talking to in the wholesalers mentioned that he was having trouble tracing a fault where there was 60 volts on the pipework and he was having trouble tracing it.I...
  7. captaincaveman

    Ring Main Tripping Rcd And Connected With Main Earth

    Hi you beautiful people. Just been looking at a rather confusing and disgusting job in a two floor ex-council house and wondering if anyone could give me any ideas (apart from walking away from it). The ring has been tripping the RCD (main switch) Live and Neutral have both failed IR test to...
  8. E

    20 Kva Magnetek Jefferson 60Hz 3 Phase, 460y/260 Dry type transformer

    Hi. Have back fed this transformer trying to achieve 400 volts from a 250 volt 50Hz 3 phase 20Kva diesel powered generator. Have linked the high voltage Delta connected side to include all the windings, and connected the generator to the star connected low voltage windings, leaving the neutral...
  9. S

    No Neutral at 3 phase step down autotransformer?

    Hi all, Been a few years since i've posted but here goes! At the factory I work in we have an old Spanish line from the mid-eighties that is fed from uk 400v 3 phase via a 3ph step down autotransformer to give 380v output. The spanish panels Do not use a neutral, just 3 phases and further 380v...
  10. S

    switched live is also neutral?

    Replacing a ceiling rose that was taken off some time ago and not replaced in an old house. 2 reds and 2 blacks, I have identified which one of the blacks is switched live using a multimeter. But it appears the 2 blacks also are connected when tested with the meter, indicating it is both a...
  11. Y

    Light Switch changes

    Hi Everyone I am extremely stuck. I have got an old plastic switch that I am replacing to a polished one but I have come across a difficulty after I have changed them over. The switch is for the kitchen lights. I currently have one Tube light connected to them and on 3 switches there are...
  12. B

    2 gang socket with usb watch for them

    Horrible 2 gang switched socket with usb. Its very flimsey and has 2 earth terminals on the back for each socket that ARE NOT CONNECTED (by not connected I mean to each other each individual connection goes to one earth pin only) so watch for them. No suprise its from china on Ebay. White...
  13. jon jordan

    V tac led driver tx's issues

    Hi all hope someone can aid me in this issue I've got why would a tx give out more output voltage on DC side than stated 30-42v Dc ( getting 57vdc) we have swopped tx over to other led on different circuit and all is ok 38v dc lights work put the other tx back which works in office onto...
  14. M

    Inverter connected on the "Load" of an MTTP controller, is that alright?

    Hi, I have a client whose inverter is connected on the "Load" of his MTTP controller. I am wondering whether that's alright in terms of maximal draw: could the MPPT controller be damaged if the inverter draws too much current? (the cables are big enough to carry the current, but I'm not sure...
  15. M

    Life Safety Services Generator

    Hi, I have a 50kva generator, it will only be used to supply the life safety services loads (water pump, vent openers, vent fan). Each item is connected to an ATS, one supply to the ATS is from a ‘normal supply’ distribution board, and the other supply is from a generator supplied distribution...
  16. P

    Tightening Positive Battery Terminal, Hit Chassis and Shorted Out?

    Hey everyone. Bit of a silly noob question. On my dirt bike, as I was tightening the positive battery terminal lead(it was loose), the allen key slipped and hit against the subframe causing a short and sparks everywhere, and causing the allen key to be extremely hot to touch. It was only for a...
  17. L

    showerlite showerfan

    Good morning have just brought a basic showerlite showerfan from B&Q and I want to fit it in a down stairs shower and I want to know if it can be wired straight to the light switch which is a pull cord.
  18. J

    Poor ir on when connected to mcb

    As above says, when testing ir on three circuits I put each circuits neutral into the line into the mcb and tested from mcb terminal to earth, each result below 1M, I then tried connecting the line and neutral in a terminal block , and the results shot up????? This consumer unit is in a cold...
  19. B

    Scratching my head lighting fault???

    Hi guys, am new to the forum. My issue is I got called to a friends house as they have an issue with their lights, I arrived and the issue was 1 lighting circuit controlling about 5 lights. I only had some hand tools on me thinking it would just be a hidden rcd or a lamp! I played around a...
  20. S

    light switch wiring - bottom landing light constantly on after new fitting

    Morning all.. I've replaced an old rose with a new spotlight fitting and light is constantly on... ...I've removed all red circuit words so just the live that goes to the light is connected... The switch for this light has just 2wires.. Both are red. .... How do I go about solving the...

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