contactor

  1. M

    Do I need a 415v coil contactor?

    Hi guys, first post on here so hope it doesn’t sound too dull. I’ve recently qualified but my background is domestic...recently started with a company working in commercial so haven’t had much experience in working with contactors. But basically I’ve got 3 rows of lights that need to be...
  2. B

    Contactor for oven

    Hi, working on a job, guy wants all appliances on grid switch, the oven needs 32amp supply so best way I can think of is 6mm into contactor 6mm to cooker then 1.0mm from contactor to 20amp DP in grid switch to keep it on grid??? Thing confusing me is the grid is on a 4mm 32amp at the moment and...
  3. L

    Contactor question

    I need to replace a standard contactor 25a That is used to pull in a 3 phase extraction fan. I called a wholesaler who said just put a 63a one in it will be fine. Surely I would be in danger of over current with this ? I've not used many contactors so want to make sure it's installed correctly...
  4. F

    how to wire a start button using a 3 phase contactor

    Hi Guys, any help is really appreciated! Want to wire a start button while using a three phase contactor. Contactor has A1 and A2 for coil and is 220 volts (contactor ). I tried wiring A1 to 1 on contact block and A2 to 2 on contact block of start push button. No power to machine. Does the...
    • freddiemac
    • Thread
    • 3 phase button contactor how to phase start using wire
    • Replies: 18
    • Forum: Talk Electrician Forum
  5. D

    Emergency Lighting contactor switch over

    Hi Everyone. Working on a self contained emergency lighting system. There are 70 emergency lights over 3 floors. The emergencies are wired on a separate circuit from the local lights but fed from the same DB. I require the supply for the self contained (batt back up) lights to disconnect...
    • Delectrician
    • Thread
    • contactor emergency emergency lighting lighting switch switching
    • Replies: 5
    • Forum: Lighting Forum
  6. S

    Timer and contactor wiring help

    I’m installing 5 downlights and 20 x 6W garden spike lights and I haven’t done much timer/ contactor wiring and I was wondering if this diagram was correct. The lights will only come on from 5:00pm until 10:00pm Cheers.
  7. A

    suggestion on using contactor with phase failure

    hi need suggestion on using contactor with phase failure relay to ON a machine which is a cnc router. the cnc router has it self ON and OFF Buttons so thinking to install a contactor with phase faller relay as a power source to machine in case of phase loss the machine power off. currently its...
  8. S

    Lighting circuit contactor

    Hi all I am replacing a contactor in a communal block of flats I believe it for the external and internal lights. Am replacing like for like but it doesnt seem right to me. Looks like its been messed about with previously? The old contactor had an a2 terminal at the bottom aswell whereas the new...
  9. D

    Timer for contactor control

    Hello all, I am needing a din rail mount timer which will control a contactor. It will need to have a function which will allow me to have the contactor energise for 30mins. Off for 30mins. On for 30mins and repeat forever. New to this and i am getting confused with On delay, Off delay timers...
  10. F

    Fuse box makes humming sound when off-peak water heating

    Video of issue: Hi I’ve noticed a humming from my fuse box when my nightly off-peak water comes on. When I first moved in I had a similar issue, albeit louder / more high pitched. An electrician replaced the contactor at the time. It might be worth noting that that little grey box (I think...
  11. Ironbones

    Still Learning -Whats this for connected to contactor and overload.

    Hi All Could someone explain this to me please. Connected to the contactor, over load are two coils (are they ferrite chokes) please see photos. Also why only two and not three one for each phase, marked with a 65 in the photos. The motor is used to control a blower unit, that moves a bean...
  12. T

    Contactor question - multiple inputs

    Any contactor specialists out there? I have multiple machines that are connected via extraction ducting to a 2KVA 3 phase extraction fan on the external wall. At the moment I rely on machine operators to switch the extraction fan on before using any of the machines (not all machines are used...
  13. N

    CONTACTOR -RELAY RECOMENDATION

    hi i would like to operate an extractor fan by dimmer switch! i looking for relay or contactor which can work between 100v-230v! thx
  14. Mark Whitehouse

    Which Starter Contactor

    Hi all I have a 3 hp single phase motor that only runs when you hold the button and stops when you release it. I am struggling to get my head around which contactor to get for it. Any help would be great.
  15. N

    Contactor control circuit

    Hi guys and gals, I am struggling to figure out how to achieve what seems to be a simple control circuit. I’ve wired a test rig and the system works as expected apart from the lamp not illuminating! What I am trying to achieve is a 13amp socket controlled contactor. Part of the control circuit...
  16. A

    Help with a contactor for lighting

    I'm about to wire a contactor tomorrow and have never done this think I have an idea what I'm doing just looking a bit of guidance if anyone could help. The contactor will have a mains from the board at it, a 3core and earth from sensor and cable from the lights. Am I right in saying, my...
  17. Dengar

    Contactor issues on ceiling heater circuits

    Hi I looked at a contactor schneider ict 4 pole 400v 25a. The fault was a loud knocking noise coming from the electricial riser cupboard. I suspected one of the contactors was pulling in and out rapidly (this known as chattering?) I am hoping you can point me in a direction as I'm not...
  18. J

    Trouble with a contactor

    Hi all Bit of advice needed. Got called to a job with a bunch of lights not coming on the set up is a 5 way board controlled via a timeclock and double pole contactor also has a small fuse inside of enclosure which is plug in fused wire type if you look closely at picture any ideas what could be...
  19. bigspark17

    Relay instead of contactor.......

    hi i need a relay instead of a contactor for a large room with two electric ufh mats, relay will be quieter than a noisey contactor, need 16amp 2or 4pole 230v, Where do youguys/gals buy yours?
  20. D

    Contactor control advise

    hi guys could you help me out please. I have been asked to put a contactor on a 100 amp supply to a dB on a food stand. The contactor needs to shut off on fire through a firetrace system already installed. 1st I was thinking of coming of the dB with a 2a breaker to feed the pressure switch...
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