2006-11-17 08:56:13 · 7 answers · asked by Anonymous in Consumer Electronics ➔ Other - Electronics
The three prongs are live, earth and neutral. earth is the third prong which is not always included. it is for safety purposes. it means that in case of a short-circuit, the fuse blows and any left voltage in the plug is sent out through the earth mains to ensure it doesn't shock the person who removes the plug. live and neutral are present in all switches. live is the one to actually bring the power in, i.e. it is the power input. the neutral is to remove ensure that if voltage it too high, but not high enough to blow the live fuse, it passes out through here.
2006-11-17 09:06:57 · answer #1 · answered by Mel K 2 · 0⤊ 0⤋
1 prong is for the hot wire
2nd is for the neutral
3rd is for the ground
mostly older plugs do not have a ground
2006-11-17 08:59:20 · answer #2 · answered by Hmmm... 2 · 0⤊ 0⤋
It takes two wires to complete a circuit.
The third prong is to provide a ground, which is now required in most appliances for safety reasons.
2006-11-17 08:58:21 · answer #3 · answered by Aggie80 5 · 4⤊ 0⤋
They need at least two to complete a circuit. It's called a "circuit" because generally speaking electricity needs to flow in a closed loop. The third pin is for grounding, which is needed by only some devices, often for safety purposes.
2006-11-17 08:58:38 · answer #4 · answered by hslayer 3 · 1⤊ 0⤋
sum things might have 2 prongs, sum might have 3 prongs, it depends on what u plug in
2006-11-17 08:57:09 · answer #5 · answered by Anonymous · 0⤊ 3⤋
on most plugs the third one (the round one) is to ground the device.
2006-11-17 08:59:10 · answer #6 · answered by marc f 2 · 0⤊ 0⤋
most plugs now have 3..one side is the hot side, one side is neutral, and the bottom is a ground.....
2006-11-17 08:59:27 · answer #7 · answered by Anonymous · 1⤊ 0⤋