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  1. J

    Overhead crane

    Everything cuts out, and yes has trailing cables. And always stops at the same place. Control buttons will pull in the contactors they control but nothing happens after that. I did do a IR,continuity etc on cables everything tested ok. And windings of the motor were good too. Cuts out with no...
  2. J

    Overhead crane

    It has surely been like this for years but now it has got worse, you think contactors could be starting to go if it has been like that for a while?
  3. J

    Overhead crane

    Never been painted. The track does seem to be in good condition considering the age. But saying that, it is a very dusty environment would that cause it?
  4. J

    Overhead crane

    Hello, anyone know why an overhead crane would cut out. It only cuts out when it gets to a certain point in the building. I have IR,continuity test on from control buttons to main panel. Tested windings of the motor all ok. Checked the busbar channel to ensure connectors have not worn down. 7...
  5. J

    Vfd

    Downloaded the manual but unsure.
  6. Screenshot_20210819-165855_Drive.jpg

    Screenshot_20210819-165855_Drive.jpg

    • John robertson
    • Media item
    • Comments: 0
    • Category: Electrical Videos
  7. Screenshot_20210819-170338_Drive.jpg

    Screenshot_20210819-170338_Drive.jpg

    • John robertson
    • Media item
    • Comments: 0
    • Category: Electrical Videos
  8. Screenshot_20210819-170344_Drive.jpg

    Screenshot_20210819-170344_Drive.jpg

    • John robertson
    • Media item
    • Comments: 0
    • Category: Electrical Videos
  9. Screenshot_20210819-170522_Drive.jpg

    Screenshot_20210819-170522_Drive.jpg

    • John robertson
    • Media item
    • Comments: 0
    • Category: Electrical Videos
  10. Screenshot_20210819-170816_Drive.jpg

    Screenshot_20210819-170816_Drive.jpg

    • John robertson
    • Media item
    • Comments: 0
    • Category: Electrical Videos
  11. J

    Vfd

    I
  12. J

    Vfd

    The guy running job is from the mainland, I stay in western isles, but he said and emergency stop, so Im assuming he has done all the risk assessments. I have just spoken to him through email. So im unsure what he needs. I will need to try contact him tomorrow and find out.
  13. J

    Vfd

    I've not worked with vfds before but have been asked to add an emergency stop button and a level sensor. Looking at the manual and reading other things online im little confused. For the emergency stop am I right in thinking i just want to break the control voltage 24v? So would i just put the...
  14. J

    10 kva site transformer

    MCB. Yeah been working for as long as they have had it. No signs of burning, no in great conditions with dust etc though
  15. J

    10 kva site transformer

    Hi guys, yeah it has been working for as long as they have had it, only started tripping the other day. They are just using grinders off it but usually just one so dont think its overloaded. I did see a 110 socket with the L and N points touching so sorted that but still trips when unplug...
  16. J

    10 kva site transformer

    Hi got a 10kva transformer that keeps tripping. Im told its about 20 year old. Its fed off a type C 32 amp breaker. Single phase. Did continuity test between windings and all ok. Secondary has a centre tap so is that why I would get continuity between phase and earth? Not worked with much...
  17. J

    cable size for shower

    I just used one of those online volt drop calculator things and they come up with 16mm also. just I was looking at the regulations book for 10mm ccc and noticed with method 103 that it would be rated to 32 amps therefore I would have to go to 16 as the shower is 35.4 amps. I was just going to...
  18. J

    cable size for shower

    Hi guys I have been asked to fit new shower and run new cable for it too, looking at regs book it would have to be reference method 103, which for 8.5kw shower would mean 16mm cable, can terminals in the shower take 16mm and the terminals in the isolator? I have tried looking for different cable...
  19. J

    Is a Fan isolator required

    Hi guys you've likely had this asked a lot on here. I have been asked to fit a extract fan wi timer in a bathroom for a friend, i have told him he should get a fan isolator but is adamant he does not want one for some reason (for all it would cost). Is it still ok and safe for it to come on with...
  20. J

    What type of jobs can i get?

    Yeah thats the plan anyway

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