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  1. ray-bentos

    Continuity on lighting circuit - weird results?

    Hi Running a quick test on a lighting circuit today, was doing R1 + R2 on downstair lights. Everything seemed OK, but upon trying to prove polarity by using switches obviously upon switching off the circuit goes open but when tried switching on again and testing again I got a wildly...
  2. 1Justin

    Megger: "Touch voltage contact point" WTF?

    I've used my MFT1720 for a couple of years now and have no problems, but have never understood what the buttony-thing on the front with the little earthed man was supposed to be for. Megger call it a "Touch Voltage Contact Point".. and that's it... No other information anywhere in any of their...
  3. 2

    Tradesman4u.com

    Hi, just wanting to know does anybody have a contact number for tradesman4u.com as i need to contact but cant find a number anywhere on the net. thanks jonny
  4. H

    Alarm door contacts Help!!!!

    Hi I have no experience of alarms, I have just bought an alarm kit for my own house, it is a Honeywell accenta G4 mini panel, anyways I want to wire two door contacts to it, 1 for front and one for back doors, but I haven't got a clue on what connections are required at the contacts as there are...
  5. VoltzElectrical

    Megger 1553 error, what's the problem?

    Testing a lighting circuit today in a house. R1 R2 fluctuating readings, so tighten up earths in ceiling rose terminal and get a steady 0.36 ohms. Power up and on no trip setting (RCBO) the meter gets half way through the test then bleeps and says ERR. I'm at a loss now, any ideas people...
  6. S

    Downlights in contact with wood lathe.

    Hi. I recently fitted some downlights to a customers bathroom via a 3rd party. He supplied the fire rated ip65 lights. I also fitted them with transformers as I felt the presence of the wood lathes below 2 layers of plasterboard constituted a combustible material. Was this enough? There was a...
  7. H

    Exposed over door contact

    Hi guys,could do with some advice on a matter I came across today on a job. It's to do with a over door contact that is installed from a bell chime unit with built in transformer. The door contact is the two metal strip kind so when the door opens the metal strips connect and sound them chime...
  8. L

    replacing crabtree C50 board!

    Hi, looking for some advice... ...I have been to look at a job where the current consumer unit is an old Crabtree C50 flush mounted type! The customer would like this replacing with another flush type consumer unit! Now I know wylex do a consumer unit which actually fits inside the old C50 box...
  9. G

    not heard from ELECSA

    I booked and paid for my elecsa assessment last thursday but have still received no response. Do you think i should contact them ?
  10. K

    volt free contact inside electric heating boiler

    http://www.electric-heatingcompany.co.uk/wp-content/uploads/2010/03/electric-boilers-tech-install-manual.pdf Go down to page 8 of this document, you will see it asks for the contacts to fire the boiler up to be volt free, now i do finally understand i think what this means, it means that those...
  11. K

    really struggling with this volt free contacts :(

    im really struggling to get my head around this volt free contacts etc :(. i think im thinking too hard into it, is there any other really easy explanation to explain what it exactly means, as in for say a boiler or that?? please
  12. K

    volt free contact inside boiler???

    Could somebody expalin why this " volt free contacts inside this electric boiler says volt free" but when the two cores leave from the zone valves will that not be 240 volts on those connections in the boiler?? Read more...
  13. sibbits

    trunking

    does any one know if mita dado trunking will take marsahll tufflexx boxes? seems mundane but the building i work in will only allow me to order thru RS and thats all they stock
  14. J

    Why did my voltage tester just explode?

    Hi, I'm new to this forum, but it seemed like a good place to find out why my voltage tester (screwdriver type) basically just exploded when I tested it on a mains voltage supply (back-box of a fused spur switch). I was trying to check whether the fused spur is part of the main loop (it looks...
  15. F

    Solar farms -

    We are currently undertaking projects to install solar parks from Birmingham down to Devon.(leasing the land) We will cover the cost for planning permission and DNO (grid connection) We pay between 800-1500 per acre, per year depending on location e.t.c If you are a land owner or know someone...
  16. L

    Alarm Timer Setting

    Hello All, I have just been called out to a alarm system where the system does not set on a timer, you have to press the set key to make it set, it is an Accenta Mercury 6. Anyone know the engineer menu map for the timer setting, it also does not set the alarm off when the front door has been...
  17. G

    led snubber

    Hi all, just changed all the gu10 halogen bulbs for smd leds for my father in law, all rooms ok except for bathroom and hall where were getting the slight glow, at times the bathroom seems to keep charging and they get quite bright, can anyone recommend a good snubber i can put in series? not...
  18. L

    Need help with supply fuse

    That's a picture of the supply fuse coming into the house i'm working on, all I need to do is change the Db, easy enough, all happy with that. Only question is how do I isolate the Db and make it safe to work on? the fuse in tagged in so can't be removed without cutting the tags but I'm not sure...
  19. M

    Instaltest 61557 Alphatek RCD- Contact Voltage and Fault Loop Resistance?

    Hi I just purchased one of these and downloaded the Instaltest 61557 manual. In the RCD menu (No 10 setting of the Function Switch), The manual says set the function switch to Uc,RL "Contact Voltage" or "Fault Loop Resistance and the initial menu" will be displayed, Uc or Loop message starts...
  20. G

    RCBO test Results

    Hello Guys, Can you help with a problem we had today. We have installed a ring circuit of exterior 70 watt MHi floodlights around the perimeter wall of a building. There are 16 lights on a ring of fire tough 2.5 R1 + RN with 1.5 R2. The cable length is 230 meters. The ZS = 0.71. R1 = 1.59...

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