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  1. A

    12V Dual Pole Relay connections...

    Hi all. I have just received a 12V 2 pole 2NO and 2NC and there's no instructions on how to connect it to the power. Normally being a coil negative swapped with positive would make no difference however, this has an LED light and a resister. I am thinking the 12V life wire should before the...
    • albertc30
    • Thread
    • 12v being connected connections positive relay
    • Replies: 20
    • Forum: UK Electrical Forum
  2. A

    LED lighting strips

    I am looking at producing a production light for filming using natural white light led strips. I will be using 3 5m reels rated at 12v and 2A/5m. I am looking at using 100cm length (therefore there will be 15 100cm lengths) and was wondering whether it is best to have them in series or parallel...
    • alex30
    • Thread
    • connected dimmer led lighting parallel strip strips
    • Replies: 6
    • Forum: UK Electrical Forum
  3. P

    New board connected to V I R cables

    Hi whats the situation on following! went to wire a bathroom today in old terraced property all looked good new board (last 6 months) full niceic member! certificates not to hand YET! looked in loft to find V I R cables! works out from board new cables run 2 mtrs into joint boxes picking up old...
    • powervan
    • Thread
    • board cables connect connected customer new new board problem
    • Replies: 56
    • Forum: UK Electrical Forum
  4. R

    Fire alarm sounder connected to door entry system help please

    Hi All I have door entry system that i installed at a care home. it is a fail safe system but they didnt ask me to coonect to fire alarm system unitl after i had second fixed it all. Long story short i have connected it (through a relay) to a local fire alarm sounder that gives out 24v on...
  5. D

    Looking for ideas for a wired gate alarm

    Hi, I'm after some ideas to make a wired gate alarm, I have tried a wireless version and it's hopeless, despite claiming a 100M range I have found it has to be so close to the house that the 'visitor' is by the door by the time the alarm goes off. My plan was to use bell wire connected to two...
  6. sibbits

    240v heating element connected through 2 phases?

    i was asked to check why a tank heater was not working properly today an came across something im pretty sure is wrong. but was wondering if any of you had any thoughts on the element 240v rated was connected to two phases (one at each teminal ,no neutral) via seperate breakers, i dont know...
  7. uksparks

    CU Connected with breakers taken out first

    Hi, Just thought id share my photos of a CU I finished, well almost finished today, just needs another 6A breaker and a couple of the circuits connecting in, but otherwise, its pretty much there! I am so please that I have discovered this new better way of connecting everything, it feels like...
    • uksparks
    • Thread
    • attach because breaker breakers connected first neutral out taken
    • Replies: 18
    • Forum: UK Electrical Forum
  8. M

    DOL 3 Phase

    A bit confused... On a 3 Phase DOL motor starter I have seen a few diagrams online and in books etc and they show one side of the coil A1 connected to L1 and then the other end of the coil connected to L3 and obviously going through the control circuit, so the coil is wired phase to phase...
  9. J

    RCD tripping at 1/2 test

    Testing some new cabinets today which had in them a PDU with a 30mA rcd upfront as main switch. ( We build among other stuff, communications cabinets for highways, railways, etc). First one tested tripped on 1/2 fault current. Tried another cab, same thing. Did a ramp test, (tester is Kewtech...
  10. S

    rcd trip y

    hi i was on a fuse board change to day and the new fuse board was switch off and no buzz bar connected and no tails connected but 1 of the circuits which was a radial to the kitchen when you put the neutral in it tripped the rcd can any 1 tell me why :lightbulb:
  11. S

    RCBO timing too high

    Hi All just done a c/u change fitted with 8 RCBO's and when testing the trip times 2 of the RCBO times were too high (40a 30ma =40.8 ms . 32a 30ma = >40 ms )on X5 ? changed the 2 x trips and retest exactly the same times ?! disconnect the circuits and retest trip times perfect, ok so retest...
    • shocked
    • Thread
    • circuit connected rcbo tested testing times
    • Replies: 47
    • Forum: UK Electrical Forum
  12. D

    Rcd not tripping

    I'm stumped, fitted new cu in one bed house today RCD would not trip using test button or on test. The only time it trips is when a load is put onto socket circuit, or the socket on the cooker isolator, no faults have been found during testing. Its a TNC-S system ze of 0.16ohms IR of >999 on...
    • Doctorsparks
    • Thread
    • connected correct rcd tested tripping worked
    • Replies: 23
    • Forum: UK Electrical Forum
  13. cliffed

    Unsatisfactory

    Connected new central heating system,did usual test Zs at switch spur for boiler.Also a visual only on the 3 bed property.Noted no earth on oil supply,upfront a 100ma rcd it's a tt system.Told all this to the gaffer,apparently we did the pit report sometime ago,the client knows all this but...
  14. JD6400

    100+ volts down earth ????

    Just had a call from two of our men who are testing an agricultural dealership , they have found 100 + volts on one of the lighting cpc's . To cut a long story short , they have cut around 2 and a half meters out of the 10 meter the circuit ( 1.5 T+E ) and have it laid on the floor . They say...
  15. S

    rcbo tripping times

    Hi all help please,I tested a6 amp rcbo30ma at board with out load connected the rcd results are 310ms at times 1 and 50ms at times5 so I changed it thinking it was faulty tested new 1I fitted got same results I then rcd tested another rcbo in the board another lighting circuit results are fine...
    • sparkygrant
    • Thread
    • another connected rcbo results tested times tripping tripping times
    • Replies: 16
    • Forum: UK Electrical Forum
  16. D

    when i press switch 1 switch2 light come on as well

    i wired kitchen florescent loop in method then i took live feed for outside light (flood light with sensor) direct to switch then to light.when i switch kitchen light on the outside light switch come on as well.can anybody help me with this please.
    • derby 000
    • Thread
    • connected fluorescent light press switch you've
    • Replies: 25
    • Forum: UK Electrical Forum
  17. Gnasher

    Conductors not connected

    Can anybody give the reg number that states that any conductor not connected whether in a multi core cable or single in a containment system should be connected to earth. I may be wrong but as far as I am aware this is good practice and there is no reg stating it should be done. Looking...
  18. U

    Underfloor Heating

    Hi, Now I understand that this question may seem pointless, so humour me anyway... A lady had underfloor heating installed about 10 months ago along with her new kitchen... I was there for the kitchen install but didn't do the mats, there are two mats serving her kitchen and utility room...
    • ultinator
    • Thread
    • connected heating kitchen probe programmer reading underfloor underfloor heating
    • Replies: 5
    • Forum: UK Electrical Forum
  19. R

    Radial Circuit

    Recently i have wired a small dwelling house. I have used 2.5 mm Wire for a radial circuit of 2 double and 2 single sockets. (probably the cable length of 35 m) I am a bit conscious to know whether it will work for longer time. or i will need to make it a ring circuit. WHAT DO YOU SUGGEST?
    • Rajesh Kerai
    • Thread
    • circuit connected night outlets problem radial radial circuit suggest
    • Replies: 39
    • Forum: UK Electrical Forum
  20. S

    Commercial canopy fan help

    Hi i have a canopy fan to wire up the problem is a 3rd party has left no wiring diagram for it. It will be working of a speed controller which has the connections N L E U1 U2 1 2 . The Fans make is RUCK Ventilation DVNI 500 E4 Single phase it has 5 conenctions at the isolator. It is numbered...

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