I would like to undestand exactly why, when you
interchange Live & Neutral, then the appliance can "blow up"?
I am situated in Belgium. Here all residential installations are TT systems.
Some are 3 x 230V and others are 230/400V. All fusing is on all poles.
In the 230/400V instalations, when we use 230V (ie. Live & Neutral), we can
interchange live & neutral in a plug of any domestic appliance and we do
not have any problems resulting from that (nothing "blows up").
One more thing I wanted to clarify. I have heard from somebody that in
England, it is not the neutral which is grounded at the supply, but that
it's the live which is grounded. See the attached picture. If this is true,
then I don't understand how it can be a TN system? Is this true?
