Overhead powerlines causing static electricity?

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muskiedog

Senior Member
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Minnesota
I have highway crews working on stop lights and informational signage complaining about their equipment being full of static electricity. Anyone else deal with this?
 
It's not quite the same senerio but I have run into this a number of times using different sissor lifts. These lift were being driven on a concrete floor, and when you would raise them up, and grab anthing metal, you would get a pretty good shock. I solved this by attaching a piece of jack chain to the lift, and let the other end drag on the ground. It fixed the problem.
 
I used to work for a railroad...the trains were powered by an overhead catenary system (12kv - 25kv)....while working out on the rail - usually on a nice swampy August day - my partner would sometimes sit down on the rail to take a breather....I would stand on the rail next to him, raise one arm/hand towards the catenary, then with the other hand come just ever so close to his bald head...he would get little zaps straight to the brain from my finger tips....LOL.

What you are experiencing is more likely a light induced voltage rather than a static charge. Your workers are becoming "energized" (as I was) and when they touch the grounded equipment (like my buddies carnium) they recieve a tingle.

It may also be that your workers are in fact too close to the overhead wires. This would be a dangerous situation as they could actually become energized. How close/far are the workers to the power lines (in your estimation)?
 
They are outside osha standards and use the utility company when they need to work inside those boundries.

EMF I believe to be doing this. They have even had subcontractors not ccome back due to the tingling they have recieved.

I guess I will head to the source. the power compnay.
 
muskiedog
Utilities cause static with loose conections. The transformers and taps are made up using hot line clamps which over time get loose and cause arcing. The arcing is what you are hearing as static. Call the utility and let them know. They probably have equipment to locate the problem.
 
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