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strange

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  1. O

    Strange negative voltage on neutral.

    This has got me stumped,continuos corrosion on a water pipe,plumber claims hes getting zapped,well we checked the supply right back to the transformer,everything ok,with neutral disconnected from earth -15 vdc appears enough to light 400 watts worth of 12 volt lamps,PEX installed from street to...
  2. P

    Replacements for this strange low energy bulb?

    Does any one know the model name/number of this type of low energy bulb? It does not seem to have any markings and the bulb part seems to be integrated with the housing.
  3. A

    varilight dimmer strange fault

    I just replaced a standard one way switch with a varilight dimmer. the switch has 3 wires, 1 single brown and a pair of browns on the other terminal. the switch works correctly but when I switch the ensuite extractor fan on, the bedroom lights go off then come back on again as though the dimmer...
  4. G

    Strange RCD Fault

    80amp main switch RCD, occasionally trips when a couple of circuits are switched on (doesn't matter which circuits) with nothing plugged in. IR tests all good. Replaced RCD for new. Happens in all weather ( don't think its external ) Only sockets on this consumer unit. Ive had my guys out...
  5. E

    Strange RCD Problem

    Afternoon all. I've got a problem with an RCD tripping that I can't get my head round. Upstairs lights are tripping the RCD. I switch off the MCB, but still tripping. So you'd think it was an earth/neutral fault. Nope. I remove the earth and the neutral from the board, and it trips on Live...
  6. M

    GE RCD's

    Done a install today fitted 3 off 4 pole 40A 30ma RCDs all tests 1X,5X 180 deg all good figures all triping well within regs also good on Ramps . Test buttons will not trip them ?????? strange. Thoughts. 3 Duffs ?
  7. S

    Strange question?

    Hi, My name is Tim Handy and I’m going to attempt to make electrical contracting more fun, productive and profitable. Don’t worry - This is not spam, I’m just a normal person and I’m not selling anything. I used to work for a mechanical and electrical engineering firm and did everything...
  8. Simonslimline

    Strange 1 way light

    My friend has a standard 1 way light in the bathroom operated by a pull cord switch, to get the light to switch on you have to pull the cord 3 times! it always baffled me as to why it was like this. can any enlighten me on this possibly? Thanks
  9. cliffed

    Strange

    Just wondering your views on this one.been to a school,they have problems with various fluroscent lights switching on,off,this only happens when they are using a dishwasher.The washer is a 230v 20 amp supply of local db,the lights also off db.Any explanation would be a help,been in touch with...
  10. Lucien Nunes

    Strange Grelco adaptor... a question for the 'vintage' sparkies

    I'm not usually stuck for ideas about old plugs but this is a new one on me. See pics... It's just like a regular 2-pin 5A Grelco, except for that peg leg in the middle. The middle holes in the sockety ends don't contain any contacts. The L&N pins are normal 5A gauge and centres. What would...
  11. 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...
  12. G

    Strange...

    Hello there, after some help with a wee electrical problem... I turned off the fuses at the main consumer unit to take some lights off because we're having some plastering done. Put the lights back up today and only one of them is working. What's more, the light in the kitchen isn't working...
  13. O

    Unexpected / Strange Voltage

    Hi Been wiring in a Jacuzzi at a customers. Wired it to a DP Fused connector unit (to isolate), then to switch junction box. Switch wire goes to a single pole on/off switch outside the bathroom The Switched live from Junction box goes to Jacuzzi. I tested it ALL OK. IR test was +299. RCD...
  14. M

    Strange fault on DC string ?

    Working in Wales yesterday, 9 255w panels and 1 SMA 2000HF Inverter. So we have 1 string of 9 panels in series. The roof was like this with each letter corresponding to a panel. [A]-[B]-[C] [DORMA WINDOW] [D]-[E]-[F]-[G]-[H]-[I] ABC panels in landscape, the rest portrait. All panels at same...
  15. T

    strange one

    Hi there, plumber phoned me during a boiler fit in a house saying RCD had tripped (nothing to do with boiler circuit), but I suspect he's disturbed something. It seems to hold for 10 mins or so then trips. I have reached a point where ive found the approx mid point of the ring, disconnected both...
  16. A

    very strange board set up

    my mum has an ex council house shes had for years, the tennant has finally gone and its time to sort the gaf out and she asked me to check out t'lectrix. im really unsure about this one. there is a very short spur from the 3036 board to a single socket outlet ( 3inches below board) and pluged...
  17. UKMeterman

    Strange earthing connection on an outdoor exihbition unit.

    Hi, I was on a exhbition trailer yesterday, the type that expands out from an articuated trailer and has an open area on the roof to spectate from. When I went on to visit the spectator area I noticed a bit of green and yellow attached with two pipe clips to some aluminum tubeing that bolts...
  18. D

    very strange induction hob problem

    Fitted a new induction hob for customer last yr, and was there sat morning swapping some light switches for her when she mentioned that the one ring of the hob wont work with a certain pan but the pan works on the other 3 rings, and other pans work on the hob that wont work with the 1st pan...
  19. sparkdog

    Strange cu wiring.

    I was at a job today and she said a new cu had been fitted a while ago.It was a Contactum with MCBs.No earthing sleeving anywhere just bare wires,but the odd thing was all the line conductors going into the MCBs had green and yellow stripey tape wrapped round them
  20. D

    Strange Monitoring via a Henley Block !!??

    Right, I've been struggling with proper monitoring now for sometime, but seemed to have partly solved this now ...... however, it isnt exactly right on a conditional basis - can you experts point me in the right direction why this is happening; OK, the tails are split straight after the DNO...

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