Thursday, September 19, 2019

Overhead powerline workers is only one way to get shocked

My father was an electrical contractor and my grandfather and one of my uncles too. I remember being trained by my father starting when I was 12 years old summers. Often we had to work "Hot" which means we had to work on things with the power on instead of off. Whenever we did this the likelihood you would be shocked at least once or more that day was quite high. But, 110 AC shocks are survivable and you get somewhat used to them after the first 20 to 100 shocks you receive. The biggest problem getting a shock is what is going to happen to your muscles when you get a shock. For example, you don't want to be holding a screwdriver when shocked because your muscles might contract and you might stick a screwdriver in your eye or arm. So, what you are doing when you might be shocked is very important because your muscles are going to contract when you receive the shock and what you are holding might injure you when that happens.

The highest power I had to work on "Hot" was 440 and 480 volts. Getting shocked by this much voltage can and likely will kill you. We were working on the main 480 panel for KCET for Los Angeles (PBS) and I made a mistake and because we were working hot burned my screwdriver in two and was blind for about 10 to 15 minutes and had a blue flash in my eyes for a couple of days after that before my sight was perfect again. So, when this happened my father grabbed my arm since I couldn't see from the flash and set me on some steps because I had blown KCET Los Angeles off the air and he had to quickly put them back on the air once again. But the voltage didn't get my body just my eyes through turning my screwdriver into liquid metal that spattered my face like an arc welder with little pieces of molten stainless steel from my screwdriver. If I had gotten a full jolt of 480 volts I likely would be dead now. And I know only one person who has survived touching 1000 volts like you have at the top of telephone poles before they go into the transformers that breaks them down to 220 single phase for most homes.

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