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  1. S

    Please help with this central heating wiring question!

    I’m hoping someone with more experience of central heating systems can help with this problem, as I’m sure it must be a common situation. A plumber has replaced a system boiler, which heats the central heating and also a hot water cylinder. The system comprises a programmer, pump, valve...
  2. L

    Megger switched probe

    Morning, Just got myself a Megger 1552 and it all looks great apart from the Megger SPL 1000 probe. Its stupidly bulky! Does anyone know if there is an alternative switched probe that will fit the tester? Cheers
  3. V

    PIR lighting issue

    Hi. Weird one. I fitted a Georgian style PIR light outside the door of my house. Got a 3 core flex cable (Line, Neutral and CPC) from board to 13A spur (fused down to 3A), then to light fitting. When you walk by, it switches on fully bright, but when it switches off (a.k.a no movement) - it's...
  4. R

    Wiring meter tails into switched fuse?

    Using a fused 80A switch at origin to protrect SWA running to consumer unit on upstairs flat. I've wired it so that the meter tails enter at the top of the double pole isolator i.e the tails running to the meter are fused rather than the supply to the consumer unit. The meter installation guy...
  5. L

    Meter keeps running with circuits switched off

    Anybody can they decide on this been to an installation in a caravan, they complain of a meter reading turn of all circuits from DB undo meter cover and see the meter still turns baffling I know, so upon closer inspection I see signs of an overload on live and neutral cables black,bubbling...
  6. S

    Underfloor heating

    I have been asked to install a power supply for approx 2m² of electric underfloor heating. I'm not installing the stuff itself but I am awaiting the delivery of it to find out the rating of it and where I need to be running cable. I wanted to know if it needs some form of thermostat, or does it...
  7. S

    'Last man out' switch

    Afternoon all, I've started a job last week in a cricket club and been asked to take over from another sparks who did the first fix. He has since disappeared and no one can contact him, which has proved most unhelpful, namely in figuring out what he had done and ensuring that there are enough...
  8. i=p/u

    Single phase switched fuse

    Can you get 40A switched fuse for single phase as need price for them , can't find them online for guide, we link would help thx
  9. P

    Industrial Ceiling Fans - Speed Control Issue

    Hi Guys, I have two ceiling fans and a speed control unit which switches on the fan and allows you to control the speed of the fans. Speed Control Unit Model is RV-05 2A max, 480W - with Forward / Reverse and OFF switching. I only have T&E from the switch to each fan (2 x Switched Lives which...
  10. S

    Switched live in fan

    hi, Just reading through 'Connections' (ELECSA's magazine). Found an article saying it was aright to use the green/yellow for a SL in a class II fan if you sleeved it both ends with a brown sleeve. They cited 514.4.3 which in my book refers to PEN conductors saying it overrides 514.4.2 (thou...
  11. M

    Noise on circuit

    Hi guys, I have a strange one. I was called to a property recently to an intermittent alarm on a heating fill set (mikrofill EFD). I have fitted many of these in the past with no problems. I contacted the manufacturers who advised me that the fault could be interference on the circuit due to...
  12. M

    60V on light (pendant) with light switch off.

    Have been called to a recently installed installation. Customer noticed one of the GLS BC LED lamps was glowing when turned off. Here are the facts: Circuit tested - all tests appear normal. Wired with feeds at the switch. All lamps are LED Measured voltage when lights switched on is...
  13. M

    downlight switching??

    hi peeps, im installing 12 downlights in a kitchen, im ok with the wiring of the down lights, but im having trouble working out how to wire from the downlight to the switch!! im running 2circuits, do i need 3core+cpc or 4core please help somone!!
  14. polo1

    Teleswitch advice

    Hi guys, Sorry about the quality of the picture. Note the connections outgoing from the teleswitch to the isolator. Can anyone confirm what the two supplies to the isolator from the teleswitch are for (the isolator out serves as the line supply to the heating contactor coil. See Post#4
  15. S

    Socket outlets, single pole or double pole?

    Have seen two types of double gang socket outlets, single pole and double pole. Not sure what the difference is. My guess is one is for use on a spur and one for a ring final but would like a definitive answer. Thx
  16. K

    Led Lights Lit Dim While Switched Off

    Hello everybody i came across a nice fault/problem today, I changed some GU10 lamps for the LED kind and they are lit dim while switched off. I have installed 2 new circuits These are the circuits the LEDs are on (1 in a extension and 1 up stairs in the older part of the house) I know these...
  17. K

    RCD tripping at half the rating ?

    Hello, i was doing an RCD test yesterday on half its rating, and the rcd kept tripping everytime, does this mean the RCD is faulty?

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