contacts

  1. 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...
  2. UKMeterman

    Cheap double sockets, computer has welded contacts in the switch!

    Hi, Ever come across a case where the inrush current of PC has spotwelded the contact of a switch on a double BS1363 socket? Thanks
  3. G

    door alarm system

    Hi everyone. I have had a request to fit a door alarm system. Basically client needs a buzzer fitted within an office that will operate when either the front or back door opens at night time only. I have a general idea of fitting 2x door magnets, when door opens buzzer activates, psu fed by...
  4. O

    D.O.L With Timer Circuit

    Hi. I am new to D.O.L but have sussed them out except I have one scenario I still need help with. There is a single phase pool pump which is set to come on with a honeywell single channel 7 day time clock. I have wired the D.O.L as single phase with a 230V coil. The problem is I need the...
  5. S

    Scantronic wireless door contacts

    Got 2 of these for sale. Got them in a kit that won't be needed. £40
  6. B

    Sizing Contactor to control Photovoltaic DC

    I know this is a U.K. site but I'm hoping someone will be able to answer a qn. Recently I saw a that a company was producing a remote disconnect safety system for PV panels mounted on a roof.This is to disconnect the arrays automatically if the mains is disconnected or manually after a storm or...
  7. M

    Relay help much appreciated.

    Evening sparks... i'm a relay virgin and need your help. First one I need a 12v thermostat to bring a 230v pump on... am I right in saying that in a relay your L & N from fuse spur in the top side, a L & N in the bottom side (output) then an 'a1 + a2' which would be my closed contacts from my...
  8. 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...
  9. L

    Alarm

    Hello, I am just about to fit my new alarm and just one little thing is bugging me. The tamper circuit. Firstly I am having 2 Door Contacts, 3 PIR's 1 Keypad and 1 Live Bell box. Now I know about the Bell Box and Keypad tamper but I am not sure about the PIR and contact? I will be running each...
  10. S

    IR ON/OFF Motion Detector Sensor Switch. Problem

    Hi i bought "IR ON/OFF Motion Detector Sensor Switch from Mr Resistor, i wanted to install it in the bathroom, to switch on and off LED light above cabinet, after instalation switch doesnt work, Just hear click sound but doesnt switch off the lights, any ideas please? Where is the problem...
  11. W

    Losing voltage at E stop

    Hi lads,ladies I have just put together an E stop circuit that is integrated into an auger motor control circuit w/ forward/reverse DOL. I have posted this awful diagram on another post but i am having some trouble when i put 24v down the + line and getting a readying of 0V as soon as it hits...
  12. 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
  13. C

    Relay help please...

    I have been wiring a heating system. The main hot water tank is heated by an oil boiler, a multifuel rayburn, some solar panels, and an electric immersion. There are 4 seperate heating zones including two underfloor with network stats and a separate circuit for towel rails. This is not like any...
  14. E

    Hi All new here and looking for good contacts

    My name is Ian Hornblow and I am a Director at Ecohouse UK Ltd a renewable energy company and Part P electrical contractors we are looking for new contacts and partners throughout the industry so all connections would be most welcome so that I can complete our profile and I look forward to...
  15. La Poste

    Timer relay question

    Greetings. I have a question about timer relays. Basically what I want is a Din rail mounted timer relay that operates from a trigger pulse from a garage door limit switch. As the door travels up it hits the limit switch and from this the coil of the relay is energised and hence the relay...
  16. Rockingit

    Need a keyswitch that actually looks like a proper key

    Evening gents and gentesses, have a customer with an electric actuated door on their wine cellar - like you do. The 'key' that the install firm fitted is just an ordinary EM test switch, so not exactly secure, and they'd like me to fit a proper one. But they'd also like one that looks like a...
  17. La Poste

    Megger 1552 Rotary selector

    Greetings. I have a Megger 1552 and the rotary selector switch seems to be getting a bit tired. I sometimes have trouble getting it to select the function I want be it RCD test or resistance etc. My question is has anyone ever stripped one down and cleaned the terminals behind the rotary...
  18. M

    Working abroad? How easy is it to get work? Contacts?

    I'm working self employed in northern Ireland but things Aren't very good here so I am wanting to get information on: where is best to work abroad? What money to expect? Any useful contacts? Is it easy to get into? I'm fully qualified, I've got the 17th edition I've got 8 years...
  19. G

    Wiring interlock switches into machine controls to inch only when doors open

    One potential job that needs looking at (not been to site yet) is to fit 3 interlocks to doors on a Webster & Bennett vertical borer. The way they want it wiring is so that the table can only be inched when any of the doors are open. I'm not sure if there's an inch button though assume yes as...
  20. L

    240v Relay 2x N/O contacts

    Hi Guys/Girls, I will soon be wiring 2x Amptec boilers, and the instructions are asking for a relay to switch one pump (100w tops). The instructions say: 240v Relay, 10amps, 2x normally open contacts, coil to contact isolated to 400v. This relay from Heatrae is £140, can someone point out...

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