magnetic

magnetic

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  1. K

    I have a 5 hp planer with magnetic switch. The planer trips the 30 amp breaker on the generator

    I am not an electrician, but have one that is not very familiar wit generators. The planer is a 5 hp 20” grizzly planer with magnetic switch and overload protection ( grizzly told me the starting amps are about 60amps) The generator is a duromax 12000 watt generator with a breaker that trips at...
  2. G

    Magnetic door holder

    Hi looking for some help on magnet door holder Have a door in a hotel that requires to be held back on wall with magnet and released on fire alarm activation.can only wire of nearest sounder as panel to far away .it's ctec 24 volt conventional system.undure how to carry out wiring to relay and...
  3. CKI:C.K-Tools

    Magnetic Bit Drivers

    Hi there, We're looking into the popularity of magnetic bit drivers, and if you have one in your toolbox: What do you think of them? Do you have one? If not, why not? Have you seen ones on site? Would an insulated bit driver be useful in your tool box? Let us know what you think! Thanks...
  4. G

    Magnetic lock timer not working.

    Tried fitting a magnetic lock on a job for a bathroom. Client has had problems with people doing drugs in his bathroom so wanted to control entry from his shop tills so the lock is fitted and works but I need it to be sorta timed as when releasing, the button locks the door( staff can't use the...
  5. W

    Led tape lights: 24V vs 12V, triac vs magnetic?

    HI, My project involves installing under-cabinet lights. Wiring is there and waiting. Have any of you seen differences, gains, sacrifices by using 12v or 24v tape lights.... or Triac vs Magnetic dimmers? Have you had any difficulty with dimmer switches with either? (not looking for Zwave...
  6. D

    Calculating inrush current for magnetic ballasts

    I need to, as accurately as possible, establish what the inrush current is for some large metal halide floodlights with magnetic ballasts and I'm drawing a blank. This is for a switchgear/DB replacement I am in the planning stages of and need to know whether these circuits can be fed from MCBs...
  7. I

    Is the strength of a magnetic field directly proportional to voltage?

    I understand current is, however is voltage? As if you increase voltage the current must increase(unless resistance does). However does this mean voltage is 'directly' proportional to magnetic field strength?
  8. B

    Accenta Gen4 - Magnetic Contacts Repeat Failure.

    Something I have found nobody has experienced before, just me unfortunately, but I thought I'd try you guys for one last fault finding. Thank you in advance. Over some years I have had to keep replacing the magnetic contacts on my outbuilding where I have the Accenta Gen4 system setup. Issue...
  9. A

    Veritas R8 Pre 2000 Magnetic contact problems

    Hi all, I've just replaced the keypad on a veritas r8 pre-2000 system as the old keypad had few worn buttons which weren't working correctly. The new keypad seems to be working fine yet at the same time I also replaced the magnetic contact on our front door as it was very hit and miss, think it...
  10. D

    Magnetic Contactor Over/Under Voltage

    What voltage should be used in the UK for a magnetic contactor? 240V, 230V or 220V I know over voltage and under voltage can lead to the coils being burnt out over time. From the wall I am drawing in around 235V but when being used it drops around 225V-230V. Is it still wise to buy the 240V...
  11. D

    Draper VDE Torque screwdriver bit

    Hello fellow electricians I was wondering if any of you have seen a VDE bit that allows different screwdriver heads to be placed in the end (If that makes any sense to you) I dont really want to keep buying different type heads when I can just swap them out from my little socket set many thanks.
  12. M

    Magnetic door sensor to turn on led light problem

    ok so what i am trying to do is. 12v led turns on when the door is open and turns off when the door is closed. But my sensor does it backwards " when the door is open the light turns off and when the door is closed the light turns on... on my tester it shows closed circuit when the magnets...
  13. M

    3 core t+e giving 45 volts when off

    I have a 3 core t+e on a 2 way switch and when it is turned off there is still 45 volts at the light. I have stripped this down to a 1 way switch and the voltage disappears. I then meggered the 3 core and it is clear. There is continuity through the conductors and no obvious fault with the...
  14. paddyc3112

    Magnetic fire door closers

    Hi, I have been asked to install 2 extra magnetic fire door closers to an existing system. I was just wondering if these have to be wired back to the fire panel or can they be fed from an existing local magnetic fire door closer? Any help would be very appreciated. Ta.
  15. i=p/u

    Magnetic door holders

    How do these work in conjunction with fire alarm. id say they just go through normally closed contactor and when fire alarm goes off it activates contactor coil . am I correct
  16. the pict

    Magnetic tray

    When drilling holes in metal consumer units to drop cables into (SWA) I need a set of die cutters and mag tray to catch the swarf I had a set yonks ago but long gone, I have project in the offing where I need to cut several holes for 1.5mm 4core SWA I have tried google but cant find what I need...
  17. P

    How electrons act under rotating magnetic field?

    I study Power Engineering in University. Today I asked my lecturer to explain me exactly how atom's electrons act under spinning rotor's magnetic field, that generated dynamic electricity. But he even didn't gave me to finish my question and said : "Explaining it to you is useless, you are not...
  18. E

    Generators

    Any body with knowlege onSDMO 400 KW gen sets wanting to talk abou it? I am having a litle problem with the speed acquisition device into one of these!
  19. H

    The procedure for setting the thermal and magnetic overload on an MCCB?(Coursework)

    Hi there I'm Carlos. I'm new to this forum and I really hope I'm posting in the correct section for this question, but I really couldn't find any other section nor could I find anything when I searched for it. My question is in the title really. I've looked almost everywhere and have come to...
  20. T

    Magnetic business cards.. Here at last :-)

    Hi Guys and girls After receiving a large amount of enquiries regarding magnetic business cards we have put some deals on for you guys. (NOTE TO MODS..Please can we make this a sticky for a week for so?) Leave a lasting impression with your customers Magnetic Business Cards 85mm x 55mm...

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