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Thread: Crane hits power line - GIF

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    carloski (Apr 2, 2022), durrelltn (Apr 2, 2022), mwmkravchenko (Apr 1, 2022), NortonDommi (Mar 31, 2022), nova_robotics (Apr 1, 2022), Rangi (Apr 3, 2022), rlm98253 (Apr 1, 2022)

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    Supporting Member NortonDommi's Avatar
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    I wonder if the electrohydraulic controls are still working?

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    Supporting Member bob_3000's Avatar
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    Quote Originally Posted by NortonDommi View Post
    I wonder if the electrohydraulic controls are still working?
    I'll hold your beer while you check.

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    Quote Originally Posted by NortonDommi View Post
    I wonder if the electrohydraulic controls are still working?
    Before one performs electric welding on cars, he should disconnect the battery, we are talking 80 volts welding. Imagine what thousands of volts from power line will do to a vehicle.

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    some of the diodes might not work so good anymore.

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    Supporting Member NortonDommi's Avatar
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    Quote Originally Posted by mansworld View Post
    Before one performs electric welding on cars, he should disconnect the battery, we are talking 80 volts welding. Imagine what thousands of volts from power line will do to a vehicle.
    I have struck a problem with L.E.D. lights on trucks and trailers as well. I used to just bridge a spike protector across the battery terminals but welding near a L.E.D. light has blown a few so I now also disconnect them at the plug. The newer multivoltage lights don't seem to suffer as bad but why take chances?
    Anyone else encountered this?

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    Supporting Member desbromilow's Avatar
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    Quote Originally Posted by mansworld View Post
    Before one performs electric welding on cars, he should disconnect the battery, we are talking 80 volts welding. Imagine what thousands of volts from power line will do to a vehicle.
    typically the HV will track through the carbon in the tyre rubber and conduct to Earth, heating up the tyres until the y explode, and start burning. With the tyres alight, the rest of the vehicle follows pretty quickly.
    All crane drivers in Australia are trained on how to exit a crane in contact with overhead lines, so they aren't hit by the resulting step potential as the crane and earth become part of the circuit.



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