Re: Alternating current & neutral wire

The centre point of a 3 phase star-wirred transformer is 0V no matter where you are in the world.

One of the 3 phases supplies your home. The neutral in your home runs back to the centre point of the transformer and also to earth.

Put an ammeter on the neutral of a light bulb and you will see that current is flowing. It you touch the neutral you will not be shocked because the path of least resistance is through the neutral back to the centre point of the traffo.

If you disconect the neutral...