I know that the rule states that if you are on a crane that has come into contact with a power-line , and on fire that you should jump from the cab. Is it possible to get out of the cab and walk to the outrigger and then jump?
If you have to get off a machine that is in contact with lives wires you carefully jump in a way you can land with both feet together and stay upright, then you continue to jump feet together until well away from the machine...
Reason is the voltage radiates out from the machine falling to a lower voltage with distance, if you walk or fall over or whatever, some part of your body touching the ground might be at 1000V the other part on the ground might be 1500V, thus electricity will travel through you..
If you jump feet together you do not create a voltage difference for an electrical path to travel...
Unless you are in immediate danger of being burned or blown up or crushed, close your eyes, pull your arms and legs up into a ball, and STAY inside the metal box. That is absolutely the safest place to be if the electricity is the only danger you're facing. Even if the power seems to go dead, wait for the fire or powerline crews. Some breakers will trip when they sense leakage to ground, BUT they will also in many cases try to automatically reset after a short time, they're designed like that clear tree branches and such that may contact the line.
I've been on work sites where gravel trucks have contacted power lines with their boxes raised to dump. It's something to watch out for that we wouldn't normally think about as a hazard.
I've been on work sites where gravel trucks have contacted power lines with their boxes raised to dump. It's something to watch out for that we wouldn't normally think about as a hazard.
Just going on from that if someone is in the situation where they are injured and still in or on a machine with lines in contact with it LEAVE THEM THERE, NO RESCUE ATTEMPT SHOULD BE MADE until it's confirmed the lines are inactive usually by the power company.Unless you are in immediate danger of being burned or blown up or crushed, close your eyes, pull your arms and legs up into a ball, and STAY inside the metal box. That is absolutely the safest place to be if the electricity is the only danger you're facing. Even if the power seems to go dead, wait for the fire or powerline crews. Some breakers will trip when they sense leakage to ground, BUT they will also in many cases try to automatically reset after a short time, they're designed like that clear tree branches and such that may contact the line.