Mike Tomlinson wrote:

Mortimer writes

You mean that two of the phases are the *same* colour?

Yes.

Surely not

Unbelievable but true. Foisted on us by the Eurocrats in Brussels

No, the phases are *NOT* brown, black & black, they are brown, black and
grey - with blue as neutral.

https://encrypted-tbn0.google.com/images?q=tbn:ANd9GcSZUiPgXe-2_ZnlZOxoGaomZJ-8H_g4TPQocO1V6fRh6U25GCGj