contactor

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  1. L

    Contactor Wiring District Pump

    Please can somebody advise how I connect a contactor. I have a single phase district pump feeding multiple properties 12Amp max. LNE I have a local switch fuse spur for pump. LNE It is switched from a Biomass controller (has a 3A supply). LNE I have not connected one before and do not want...
  2. 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...
  3. N

    three phase contactor

    Hi Guys, please can someone help with a little problem I have........ please see photos! I would like to add a push switch to bring a motor in to turn over an engine (on a dyno) and I would like to use the contactor pictured but cannot for the life in me make it work , the single breaker appears...
    • naughtybear
    • Thread
    • contactor phase three three phase
    • Replies: 17
    • Forum: UK Electrical Forum
  4. J

    Patio Heaters through contactor?

    Hi all, Had a customer who has 2x 1.5kw patio heaters. He is looking for these to be switched separately, in an ideal world this would be from a 2G Master seal switch. Now obviously the loading is an issue. I was thinking of maybe using 2x din rail contactors in an enclosure as the db is...
    • jthenderson
    • Thread
    • contactor heaters pat pat testing patio through
    • Replies: 5
    • Forum: UK Electrical Forum
  5. infinity

    Emergency stops for LAB sockets

    I have been tasked with installing emergency stop buttons at the doorways to a few labs, so in an emergency they can hit the stop button and it will kill the power to all the sockets in the room. Now the problem is they are all rings with the DB's some distance away. Had they been radials t...
  6. B

    Remote cooker switch?

    I don't suppose anyone knows of a remote cooker switch? i.e. actual wiring and switch can be hidden behind the cooker and controlled from a switch elsewhere? It will be on a 32A circuit. It needs to be relatively small, say fit in a 35mm 2G backbox sort of size so I suspect that rules out a...
    • brman
    • Thread
    • click contactor cooker other remote switch
    • Replies: 21
    • Forum: UK Electrical Forum
  7. joel89

    JIB Electrotechnical Certification Scheme (ECS) one for tony. demag jib hoist

    heyup tony, stripped one of our demag jib hoists down suspect contactor welded in, and i have found what appears to be a double "coil" contactor A1 , A2, B1, B2. the motor is a 2 speed hoist, with another contactor mounted at the side 2phase in from the double coil contactor dead side and 4...
  8. uksparks

    Best place to buy a new contactor

    Hi, Just got to replace an old MEM Autoline 3 with a resistor pack inside, its about 50 odd years old, Just wondered if anyone knew of anywhere that's good on prices for these? Basically just want a new one, like for like, 50A 4 Pole. Thanks,
  9. A

    3 phase contactor advice

    http://www.google.co.uk/url?sa=t&source=web&cd=1&ved=0CCoQFjAA&url=http%3A%2F%2Fwww2.schneider-electric.co.jp%2Fappl%2FElibrary%2FSETechnical_DB_INT.nsf%2F8a6913e20cdd8337492572b4000e156d%2Fdaecb55dd5d11c4349256dff002ba2f9%2F%24FILE%2F0381933_01A55.pdf&ei=MXiGUuvKK8KUhQeRjIDgCw&usg=AFQjCNHis8DmSa...
  10. E

    large circuit

    Hi all its been a while ,(too busy) i have been to a job today but a little out my comfort zone to be honest so turned it down but sitting here tonight i was wondering how you more commercial guys or gals would have designed the circuit , job was at a commercial nursery in Wolverhampton they had...
  11. U

    Din rail timer contactor wiring

    Got a call out to a pub today, outside lights weren't working. What a mess the wiring is, as usual done by a large 'reputable' electrical contractor! DB for externals fed from supply side of switch on another DB, blanks missing from, no grommets in it 6mm Earth for the 25mm tails feeding the DB...
  12. A

    3 phase contactor with overload

    Hi all, Could some one explain the correct way in connecting a 3phase contactor with overload protection. I have the supply going into l1, l2, l3 and motor connected to the load terminals, t1, t2, t3. I also have the 230v connected to the a1 coil and neutral on a2. Just a bit confused...
    • Akanami
    • Thread
    • 3 phase contactor current motor motors overload phase
    • Replies: 19
    • Forum: UK Electrical Forum
  13. W

    Contactor---> Ring, wiring advice.

    My apologies all, my post was of coarse missing some stuff, and rather confusing. 1. Are there any obvious rules preventing the use of ring circuits coming from a contactor like the one pictured below, it doesn't s seem there is. 2 Provided there are no restrictions preventing the use of a...
    • whproject
    • Thread
    • advice contactor ring wiring
    • Replies: 31
    • Forum: UK Electrical Forum
  14. rmaynard

    Thoughts needed - Battery back-up

    Iv been thinking about a way to keep the lights on during a power cut and have come up with the following idea, it will be mainly used in domestic properties, iv included an automatic change-over, im picking up a ups today and am going to trial it at home, just wondering if anyone has any...
  15. G

    100m switch line

    I have to put 25 led down lights in a garage , customer wants them all on one switch line which will be 100 metres long. I'm going to use 1mm. Should I break them down into two lots of 14 ?
  16. joel89

    Contactor Coil Current Rating?

    Just out of interest what current does an AC Contactor coil take? I keep using 300va transformers in my panel builds but never take coil currents into account mainly only have up to 8 contactors. Cheers
  17. S

    Indicator lamp connected across contactor coils

    Someone once told me this is bad practice but I cant remember why. Could anyone remind me? Thanks
  18. D

    Contactor Wiring

    I am in the middle of a debate as to how to connect this contactor in the attached picture. The live feeds are going from the breakers to number 2 in each contactor (1L1 to number 2 in the first contactor, 1L2 to number 2 in the second contactor etc) and there is a neutral from the neutral bar...
  19. Q

    Off peak immersion heating wiring query...

    I've been testing some flats that have immersion heaters, 2 supplies - daytime and off peak. The off peak supply is wired from the meter through a contactor then back into the mcb, with the outgoing supply to the immersion heater coming from the contactor. However, when the mcb is isolated, the...
  20. R

    Correct Contactor and MCB

    Hi All I am going to be installing some high bay lighting which will consist of 3 x 400w metalhalide fittings so 1200w in total with runs of approx 60 meters in 2.5mm cable. I will be wiring the circuit via a 20amp contactor with a control circuit of a two way switch system to activate or...
    • richard1barker@
    • Thread
    • contactor correct mcb
    • Replies: 41
    • Forum: UK Electrical Forum

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