i figured because you need to use bigger thicker wire for low voltage , and thinner wire for high voltage. Therefore , you can save wire by using high voltage. I just need someone to confirm this.
Without really knowing what sort of electricity used in the film Jurassic Park, I would suspect that the High Voltage used is actually quite similiar to the ones use in a cattle fence, a High Voltage Pulsed DC. If it is a continuous High Voltage (AC or DC), that poor person would have been toasted. Low Voltage AC (220/110V) is also lethal, just that being stuck to the line is cause by muscle spasm from the electrical charge. In either case, death will occur soon enough if a person is left stuck to the line.
first. electric sistems may be considered as piping sistems, here the pipe will be the wire, the current is the flow and the voltage is the presure. to determine the size of wire to be used you have to know what is your voltage drop is gonna be, voltage will not be the same in all the circuit. second you have to know how many amperes (current) you are gona make flow thru the wire. i'll make you an example, an engine sparkplug works at 10,000volts, bout only a few amperes (about 0.005) and you need a small wire, the kitchen toaster works at 125 v but about 15 amps., instead of that a industrial blower that works at 4160v and consumes 95 amps uses a 2/0 wire (this is 00 and is a 1 inch diameter wire) wire size is function of the current, what is function of voltage is the wire insulation, since voltage is to pressure as wire is to pipe, wire insulation would be the same as pipe thickness, greater insulation would be equivalent to a thicker pipe. so to bigger voltages, bigger insulation to bigger currents, bigger wire
Yes Power Voltage* Current Power lost Current^2 * resistance of wire. So if you raise voltage, and lower current you can deliver more power to the destination (lose less power on the line). Or you can use adjust the thickness of the wire to achieve desired results. Note, for very high voltage, you need to take into account the skin effect, in which the electricity is conducted primarily along the outer surface of the conductor. Edit: I don't think the guy below me even read the question completely before he blurted out his answer. Edit #2: David M is right about skin effect I stand corrected (what was I thinking?!)
The guy with the first answer has it mostly correct except that skin effect is an issue at high FREQUENCIES, not high VOLTAGES. Dave
Lives are saved by using proper insulation, safety devices and by sticking to electrical safety codes. Higher voltage is deadlier. 120V can be easily survived and unless you drop the hairdryer into the bathtub the overall mortality is low. 240V (as used in Europe) are a lot more dangerous but most small accidents are still not deadly. But few people survive 380V accidents. Touching even a small piece of conductor will lead to lethal current through the heart at that voltage. So you are completely wrong.
