what is the function of a ground wire on a plug?

Answer 1

If you're using a metal power tool and the voltage shorts to the case, the current goes through the ground wire and pops the breaker instead of frying you.

Answer 2

For fault current to flow, in the event of the isolation breaking down in your transformers inside your devices. It's either you have a ground, or the chassis of your devices could float to your line voltage and give you a pretty good shock.

It also provides good business for the guys who make the 3 to 2 prong conversion plugs.

Answer 3

Ok, well every1 is right here so i will give you another example. Your washer, fridge, cooker, sink, taps, radiators, PC, metal electric fire surrounds are all metal. If one becomes live, and you don't have an earth, it could happily stay that way for years, only if you touch the damn thing and your not wearing any shoes, you become the new earth. the current goes through you pal. Some appliances are not earthed to protect the user, though these are few, table lamps are one of them. Rule is, if you appliance has an earth, use it!

Answer 4

The device will make a short circuit if the ground it has is somehow conected to the energized wire. This will happen to the device and not to you.

Answer 5

if thereis a short in the moter.heater.or switch the current is directed to ground .[outlet].

Answer 6

Conducts electricity into the ground instead of into you.

Answer 7

IT ACTS AS A PATH FOR THE ELECTRICAL CURRENT TO FOLLOW INTO THE GROUND RATHER THEN YOUR BODY

Answer 8

It keeps you from getting electrocuted in case of a short.