On Mon, 26 Dec 2016 19:42:19 -0000, "James Wilkinson Sword"
wrote:

He already said, he just uses the EGC if he needs a neutral.
Yikes

Why not? It's the same once it leaves my house. Only two cores in the supply cable.

The problem is what happens on your side of the main bonding jumper.
If a fault develops in that EGC you are putting 230v on the case of
every piece of grounded equipment on that circuit.