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The WTF Electrical Photo Thread - NO CHAT - JUST PICS - Read post #1 before posting

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  • 11-04-2015 8:42am
    #1
    Closed Accounts Posts: 14,158 ✭✭✭✭


    I robbed this idea from the plumbing thread but think we should post pictures here of any crazy electrical issues we find or things that are just bonkers!


    <Mod edit>

    A few rules about posting here:

    1. No identifying information whatsoever.
    (This also means company names are not to appear in photos).

    2. Size photos properly.

    3. Let's try to focus on photos and keep chat to a minimum. No quoting pics/posts please. If you would like to discuss something feel free to start a thread.

    4. Remember the Forum Charter still applies.

    5. If you arent sure about an image then PM the mods to ask before posting.

    Enjoy :)

    </Mod edit>


«1

Comments

  • Moderators, Recreation & Hobbies Moderators Posts: 10,432 Mod ✭✭✭✭Mr Magnolia


    Does it have to be pictures we've taken ourselves?

    4P2XpX.jpg


  • Registered Users Posts: 936 ✭✭✭bassey


    I have a perfect picture for this. On a job in Germany a few weeks ago I was testing all the sockets for power, the first socket on a dado had power but none of the rest did, the culprit?

    bassey.jpg

    Invisible wires?


  • Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,546 Mod ✭✭✭✭2011


    This shows the importance of crimping the ferrules properly. The cables from the load supply of a soft starter simply fell out :eek:

    IMG_2934.jpg


  • Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,546 Mod ✭✭✭✭2011


    This demonstrates the importance of carrying out an insulation resistance test (Meggar test). This cable was joined in a "submarine joint". Unfortunately the joint was not very good because the neutral was shorting to one of the phases.

    IMG_2959.jpg


  • Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,546 Mod ✭✭✭✭2011


    There was an issue with a popular 63A switch fuse arrangement that was on sale throughout Ireland.
    The 10 sq. link cable failed at the point where the lug was attached, causing it to overheat.

    MeltedSwitchFuse.jpg


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  • Registered Users Posts: 4,738 ✭✭✭meercat


    This demonstrates the importance of periodically checking connections and fuse tightness.

    image.jpg


  • Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,546 Mod ✭✭✭✭2011


    This problem is kind of hard to see.
    The issue was that the earth cable was massively undersized. I think that it was a 75 sq. and each phase had two 185 sq. cables.

    IMG_4741.jpeg


  • Posts: 5,238 ✭✭✭ [Deleted User]


    DSC_0302_zpsiwvs7qw6.jpg

    I've seen a few of these from time to time. Both flavours, Double male, double female and splitters with two males one female.


  • Registered Users Posts: 375 ✭✭frankmul




  • Registered Users Posts: 309 ✭✭Gate Automation


    It was underground connection.

    13498552463_95b5ddf432_o.jpg


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  • Registered Users Posts: 605 ✭✭✭meath4sam


    Wall insulated by builder so he extended the socket cables.

    image.jpg


  • Posts: 5,238 ✭✭✭ [Deleted User]


    Dimmerland_zpso6bhcnun.jpg

    >2MW supply
    100A per phase max. load


  • Registered Users Posts: 2,637 ✭✭✭brightspark


    ddfac4e5-1b6a-4b26-9642-185e7b4f96c0_zpspljev1kz.jpg


  • Registered Users Posts: 2,637 ✭✭✭brightspark


    I think so, I had spotted the plugtop turning brown and found it just like that.

    At least a gutter bolt would have made a good connection :D


    cf40db38-277a-4b51-8e6e-f231267d5121_zps85wgq0qw.jpg


  • Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,546 Mod ✭✭✭✭2011


    This picture shows open heart surgery on a ACB (air cuit breaker) to replace a failed shunt relay.
    I was a little nervous as the powerful spring in the breaker was charged and it was not possible to discharge prior to working on it :eek:

    ACB.jpg

    The next picture shows an injection test of the breaker.
    This was carried out at a very low voltage (around 0.01 volts) and a very high current (>2000 amps) to ensure that it operates as per design intent.

    Injection.jpg


  • Posts: 5,238 ✭✭✭ [Deleted User]


    Carbon%20Arc%20Spots_zpshxtr16em.jpg

    These relics will give you sunburn. Circa 1950.

    Operators had to follow their target on stage while feeding a carbon arc electrode to maintain the arc watching through a welding mask lense.


    Carbon%20Electrode_zpsgw0idmha.jpg

    Carbon Electrode & Reflector


    Traffo_zpsevm8hfwl.jpg

    Transformer ~ 4.5kVA I think


    Ammeter_zpsl3kkef6r.jpg

    Control panel.


    Gubbins_zpsbiveptlf.jpg

    Gubbins + another control dofer.


    Rear%20Ammeter_zpscup0mslk.jpg

    None of this fancy shunt business. Full load wired through the ammeter. ;)


  • Posts: 5,238 ✭✭✭ [Deleted User]


    2 x 100kVA phase synced 3 phase gensets. Supplying a 90 kVA distro.

    Gauge_zpsdsd9q8jp.jpg

    Electrode%20Depth_zpso3myvvoe.jpg

    150mm² interconnecting links 30mm² earth electrode buried 4 inches into terra firma. facepalm.gif


  • Posts: 5,238 ✭✭✭ [Deleted User]


    Theatre switch room. Installed prior to the advent of plastics.

    Switch%20Room_zpsqj4ad5uo.jpg

    Still in commission. Currently undergoing a refit.


  • Registered Users Posts: 5,369 ✭✭✭DublinDilbert


    Fixing a shower door yesterday, hit the wall where the shower was, sparks shoot out the bottom of the shower and land in the shower tray. Decided a new shower was in order.

    Taking out the old shower found what caused the sparks, a wood screw which was on top of the heating tank shorted the main live connection and the tank.

    It was installed before my time, could of easily been fatal if the shower had of been in use.

    https://www.dropbox.com/s/gjxab87en7ytfh3/photo%2012-12-2015%2020%2018%2028.jpg?dl=0


  • Posts: 5,238 ✭✭✭ [Deleted User]


    372067.JPG

    12 Volt


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  • Posts: 5,238 ✭✭✭ [Deleted User]


    The Spire Dublin.

    373582.JPG

    14 x Super Sharpies


  • Posts: 5,238 ✭✭✭ [Deleted User]


    395871.jpg


  • Posts: 5,238 ✭✭✭ [Deleted User]


    I think we've got our metal doors crossed. Clicky.

    Anyone seen one of these scissor lift chargers before?

    397720.JPG


  • Posts: 5,238 ✭✭✭ [Deleted User]


    405608.JPG


  • Posts: 5,238 ✭✭✭ [Deleted User]


    406942.JPG


  • Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,546 Mod ✭✭✭✭2011


    FullSizeRender_2.jpg

    A view from the roof of Covanta's waste to energy facility in Poolbeg, Dublin.
    An impressive facility!


  • Registered Users Posts: 1,727 ✭✭✭tnegun


    I'm not a sparks but I reckon there is something wrong here :)

    C4nM-UAVYAAwouw.jpg


  • Registered Users Posts: 1,921 ✭✭✭Andrea B.


    Was helping someone tidy up apartment between tenants.
    Storage heaters timeclock and relay. Immersion was a remnant of gold shield, wired back to storage heater circuit. This meant that no boost function during day............but there was and further, during day, the storage heaters could be energised when their spur was switched on!!
    The tails I have removed in image below are 1.5's which were parelleled with power in, and I traced them back to rear of a 13A socket in livingroom!!

    So, during day, the storage heater and immersion circuit was supplying the load side of relay and associated circuits via a 1.5 t+e!!

    94588877ad5ad1c57ea106cb0d05c4adef199b7026eb5fe67ea741e2bcbc75667804087c.jpg


  • Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,546 Mod ✭✭✭✭2011


    IMG_0653.PNG.png

    What a beauty!


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  • Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,546 Mod ✭✭✭✭2011


    IMG_6531.jpg

    No barriers to prevent someone touching 20,000 volt connections :eek:


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