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Question:

Why do we see Danger High Voltage signs and not Danger High Current signs.?

Current is what kills. Not Voltage. Voltage doesn‘t matter. So they should switch that around.

Answer:

Current can't escape while voltage can. You could stand comfortably next to a very heavy wire or massive copper bar carrying 1,000 amps and if the voltage were low a very thin plastic coating could protect you from the voltage needed to drive that if it were big enough. On the other hand, a very thin wire (household lamp wire or bell wire) carrying an amp or less, with high voltage applied to it, could break down the insulation and go through your body to ground and even very low current across the heart will kill you. High enough voltage can jump several feet in a miniature lighting stroke and in the process transfer enough current, even a few dozen milliamps to kill you.
Those are called TIRE IRONS, I bought mine 35 years ago thru JCWhitney, they are essentially big rounded off screw drivers. Easy to use but you still need to get them balanced which is not easy to do in your garage. You are not paying a premium for labor you are renting a very precise scale, the man running it is included in the price, he's not yours to abuse so be nice, like cafeteria workers who can spit in your food a badly balanced wheel can make you sick of riding.
Voltage is the potential to produce high current. Without voltage there is no current. If the resistance is high enough the current is not dangerous. It is much like falling from great height. the fall does no damage it is the sudden stop at the bottom which kills you unless you have a chute or a pair-o-chutes; resistance!
Voltage is is like a pressure of current if the pressure that is voltage is high then we will receive a severe shock if there is no voltage the current may not flow through it overall voltage leads therefore there is danger high voltage signs and not danger high current signs
any bike shop could order tire irons for you. Get the longest ones you can find. It makes it a lot easy'r.

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