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Gdetrailer
Aug 13, 2016Explorer III
rjxj wrote:SoundGuy wrote:
Any RV owner would benefit from reading Mike Sokol's No Shock Zone. :)
Good stuff. I bookmarked it. He mentions that as low as 30 volts can stop your heart. Before I retired I had the opportunity to go to hvac school. I figured if I dont work in the field it still wont hurt to go. The first instructor started talking about electricity and getting shocked and said before this class is over each of you will be touching 120 so you know what it is like. I though to myself what the heck did I get into here, do you want me to sever an artery on a piece of sheet metal during the duct work portion of the class? I only did one day of class.
Actually it ISN'T the Voltage that kills.. It IS the CURRENT THAT RUNS THROUGH YOU HEART that will kill you.
You only need 1 ma of current directly through your heart to stop it.
So depending on the exact contact points on your body you may or may not end up dead but in most cases if not dead you will have some very painful reactions/burns..
The MOST vulnerable path of electricity through your body is from your right hand to your left hand.. Your HEART is DIRECTLY in the path between those two points..
Alternately secondary vulnerable paths would be from your left hand through left arm to your feet since your heart is on the left side of the body..
My Electronics Tech school really beat into students heads was to tuck your left arm BEHIND your back while servicing hot electrical items..
Use only one hand and that was your right one while poking around hot chassis with meter or scope probes..
Back in those days nearly every TV used what was known as a "hot chassis", the neutral side of the AC line cord was DIRECTLY connected to the TV chassis ground.. This tie point was also the chassis power supply grounding point..
Many older Tube radios also used a hot chassis..
Folks often would defeat the polarized AC plug by filing or cutting down the wide blade.. Yep, if one was not paying attention you would create one heck of shower of electrical sparks when connecting "O" scopes to those chassis..
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