Power Line Safety

Demonstration of the hazards associated with high voltage electricity. Presentation illustrates electrical arc flash, electrical faults, and downed power lines.

Category:

Education

Tags:

• Electricity
• Safety
• Power
• Electric
• Hazards
• lines
• Volts
• voltage
• death
• electrocution
• accident
• shock
• transformers
• faults
• arc

[randommagnum]

The hazard with the generator is something you seldom hear talked about. It should be talked about more. It would be nice if all generators were sold with a pamphlet covering this issue, so everyone would know.

[JuzzChiln]

You don't need to wet the string to get it to conduct.

[ElectricResearcher]

@russdonruss I never mentioned PPE however you make a reasonable point. But how dare you call me ignorant about how electricity works, besides having a Masters in Electrical and Electronics engineering I study BioEngineering and YES electricity is always trying to get to ground through the path of least resistance. Time you spoke to Lightning Strike and Electrical Shock Survivors International try telling them especially the linesmen that have had arms and feet blown of whilst at work.

[aurora990]

what was taught in school might not be true afterall. we were told the difference between conductors and insulators in school but the demonstrations were from low voltage sources. I really comes down to common sense regardless of what was taught in school when it comes to electrical conduction. high voltage can cause insulators to low voltage to be conductors.

[xxxcagriersozxxx]

bullshit

[MnDeerHunter09]

@MegaFactMan One set back on burying the lines is the price. I may be wrong here but I heard that it costs around $35,000 per mile of underground 3 phase. Plus you are always going to have those people that don't think they need to call before they dig.

[MegaFactMan]

If you bury high voltage power lines, rather than running them above ground, most of these safety hazards are eliminated.

[bjtaudio]

I just did some conductivity tests with my high voltage transformer using 20KV AC almost 3 times as much as the 7200Volts used in this safety video, I tried dry clean cotton string, packaging twine, dry pine wood, I placed the materials between 2 metal conductors 20KV and Gnd spaced 3 inches or 75mm apart, applied power and there was no measurable leakage current, the materials did not even get warm, I can not get cotton string to conduct, as claimed in the video.

[bjtaudio]

I'm surprised that dry wood, and dry clean string appeared even slightly conductive. While branches from trees are conductive, mostly due to the water content within, from my experiments with voltages up to 20KV ac I found wood such as finger joint pine, MDF boards and cotton string to behave as insulators, provided they are clean, properly dry, have no conductive materials deposited on them like dirt, or even paint. I would never however rely on the insulation properties of these materials.

[BankaiIchigo12345]

@SystemaNZ

At a billion volts, ANYTHING will conduct, period.

[russdonruss]

As long as the lineman does not complete a path for the current to flow to while his body is energized at line potential--be it ground or neutral--he will be uninjured. Steel toe boots are worn so that in the event that a heavy object should be dropped or fall onto the worker's toes they will not sustain an injury that may cause disability OR cause them to react in a way that would compromise their safety or the safety of those around them. They are not intended to insulate. HV PPE does that.