ItsElectricBoogieWoogie
Member
If you have voltage between Hot and ground Why when touching the ground do you not scence this votage? Why do you not get electricuted in the main pannel when touching the neutral and block?
Because there is no voltage on the grounded conductor. What you are measuring is the difference in voltage. The "hot" wire has 120 volts and the neutral has zero.
bob, regarding to neutral only,
suppose the three phase is not balanced 100% and there is a flow of current in neutral. Now according to formula V = IR how can be a zero voltage in neutral? now if you touch it, will not be there any shock because at 30mA human can feel shock.
Because there's (practically) no voltage difference between the neutral bus and anything else, except the hot wires. If you were "standing" on one of the hot wires, the neutral bus would shock you.If you have voltage between Hot and ground Why when touching the ground do you not scence this votage? Why do you not get electricuted in the main pannel when touching the neutral and block?
If you have voltage between Hot and ground Why when touching the ground do you not scence this votage? Why do you not get electricuted in the main pannel when touching the neutral and block?
I saw a piece on the history channel about the guys who work on high tension lines from helicopters. The helicopter has to make electrical contact with the line first before the lineman can step over so that the charge differential doesn't fry him. The helicopter flies off and leaves him up there to do the work, but until it is grounded it retains a charge at whatever voltage the line was when it disconnected, so the pilot has to be sure the charge is dissipated before he can get out. When he goes back up to pick the lineman up, he has to connect to the line again before the guy can get back on board. All the time this is going on, the wind is trying to blow the helicopter out of position. Whatever those guys get paid, it's not enough.Yes, as others post, one must be in contact with ground and a dangerous voltage in order to get a shock.
It should IN THEORY be safe to touch an energised conductor if completly insulated from ground. DONT try it though since a mistake could kill you.
A good illustration of this is high voltage overhead lines. Every year people die from touching these whilst in contact with the ground, or grounded articles, yet birds perch upon these conductors without harm.
That is because current can pass through the person, from line to ground, and most likely kill them, the bird however is well away from ground and suffers no harm.
Hi guys, Thank you very much for answering. This website is great I can't wait to use it more. Im still not to clear on the question does any one know of any basic theory books or even better online videos? To see how the voltage travels from The pannel and then to the device and how its split up into circuits?
Gene Simmons can do that with a series of 1.5 volt batteries. :grin:A relatively safe experiment can be done using a charged 9 volt battery. Touch either terminal with your tongue and you will not be shocked... but touch both at the same time with your tongue....
2 good theory sites:Hi guys, Thank you very much for answering. This website is great I can't wait to use it more. Im still not to clear on the question does any one know of any basic theory books or even better online videos? To see how the voltage travels from The pannel and then to the device and how its split up into circuits?