Posting a message to the forum will remove the above advertisement

Discuss Mitre saw tripping main breaker - Help! in the Electrical Tools and Products area at ElectrciansForums.co.uk.

Please make sure you checkout our forum sponsors, many do discounts for members and, they keep the forum free to use.
  1. JoeCarp
    Offline

    JoeCarp EF Member

    Location:
    Bristol
    Hi all

    I've just signed up to the forum as I'm at a loss with what the problem is - I've asked the (sort of) electrical guy at work and he is also out of ideas.

    I myself have next to no electrical knowledge, so please bare with me..

    My SIP 12" Mitre saw is being problematic. 2000 w, 13amp fuse in plug.
    Manual here: http://www.sipindustrial.com/manuals/01504.pdf

    I've recently moved into a new home where, the first time I used the saw there were no problems at all. A week later I take the saw out and pull the trigger. The blade spins for an instant, stops immediately and the main breaker is tripped.

    I then repeatedly try flipping it back on and testing it out in different sockets (upstairs, downstairs, oven socket etc.), different/no extension leads, checking the fuse, all ending up with the same result - initial spin up then trip.

    I take the saw to work (carpentry workshop) - works absolutely fine. Wiggle the cable about while running it to see if the problem is there, continues to run perfectly.

    I take the saw to another house just round the corner, with presumable similar wiring - absolutely fine there as well.

    So I suppose:
    What's wrong/different with my house that's causing the saw to trip the main breaker?
    Is the saw itself problematic, but other properties seem to be able to just deal with it?
    Why would it work properly on initial use but fail to work a week later?

    Thank you very very much in advance!

    Joe

    IMG_20170705_070109658.jpg IMG-20170621-WA0004.jpg
     
  2. telectrix
    Offline

    telectrix Scouser and Proud of It Trusted Advisor

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    easy peasy fix. get a local electrician round to change the MCB for a C type ( he''ll need to test the circuit to ensure it's parameters comply ). the C type MCB allows for a higher inrush current, common when motors start up. there's a female spark or 2 on the forum in your area may be of assistance.

    and get a cord grip fitted to that plug top.
     
  3. JoeCarp
    Offline

    JoeCarp EF Member

    Location:
    Bristol
    Ahah, great. Any guesses on what this is likely to cost me? Thanks
     
  4. westward10
    Offline

    westward10 Ugly kids what a disappointment. Electrician's Arms

    Location:
    Northamptonshire
    Can you show a picture of your consumer unit.
     
  5. telectrix
    Offline

    telectrix Scouser and Proud of It Trusted Advisor

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    incuding materials cost.should be about £50 - £60.
     
  6. telectrix
    Offline

    telectrix Scouser and Proud of It Trusted Advisor

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    he has done. some weird make. Doekpe
     
  7. Pete999
    Offline

    Pete999 Trusted Advisor

    Location:
    Northampton
    The main breaker you talk of, this would be I presume an RCD? it would appear that you have a possible N TO E fault in your property, have you recently done any DIY i.e, shelves, picture hanging, or anything else, grateful for a response to enable further advice.
     
    • Like Like x 1
  8. westward10
    Offline

    westward10 Ugly kids what a disappointment. Electrician's Arms

    Location:
    Northamptonshire
    Oh yeah didn't see that, might struggle to get a type C for that.
     
    • Like Like x 1
  9. westward10
    Offline

    westward10 Ugly kids what a disappointment. Electrician's Arms

    Location:
    Northamptonshire
    Yes didn't spot the main breaker bit so we need to know what is tripping.
     
  10. telectrix
    Offline

    telectrix Scouser and Proud of It Trusted Advisor

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    yep.is it the mcb or is ti the stupid 1980's up front RCD.
     
  11. JoeCarp
    Offline

    JoeCarp EF Member

    Location:
    Bristol
    Forgive my ignorance, I'm not up to speed on the RCD or N TO E jargon. What are they?

    When it trips, I flip the switch on the far left side of the unit pictured and it's all ok again.

    As far as DIY goes, we've just moved into the house so various shelves and pictures have gone up, yes. How might this effect it?
     
  12. Pete999
    Offline

    Pete999 Trusted Advisor

    Location:
    Northampton
    You may inadvertently drilled / damaged cables
     
  13. Pete999
    Offline

    Pete999 Trusted Advisor

    Location:
    Northampton
    RCD Residual current Device, protects against faults like N to E faults whereby the N conductor comes into contact with the Earth conductor.
     
  14. JoeCarp
    Offline

    JoeCarp EF Member

    Location:
    Bristol
    Ok. How can I test for the N to E fault? Why would it only show up using the saw and not anything else? Regardless of upstairs/downstairs sockets too
     
  15. Pete999
    Offline

    Pete999 Trusted Advisor

    Location:
    Northampton
    Joe, you don't seem to understand, without the required test equipment and knowledge you would find it impossible to test your installation, you need the services of a qualified Electrician, to test, locate and repair any faults that may be present.
     
    • Agree Agree x 1
Loading...
Similar Threads - Mitre tripping main Forum Date
Tile trim Mitre box suggestions?! Tiles - Advice on installing and buying tile Mar 9, 2017
Mitre Wiz Tiles - Advice on installing and buying tile Feb 12, 2017
Advice needed electric keeps tripping Electrical Forum Thursday at 8:35 PM
Advice Needed - CNC Machine Tripping Electrical Forum Thursday at 9:46 AM
cooker keeps tripping rcbo as soon as you switch it on Electrical Forum Wednesday at 8:44 PM
Pete's Videos The "Pinch method of stripping twin and earth cable" Electrical Forum Jul 11, 2017

Share This Page

  • Electricians Directory Post a Domestic Job Post a Commercial Job