OK, obviously non-conforming to the International colour codes.Just for reference-
Our neutrals are white.
Black, red and blue are the 3 phases in a "non 3 phase" 240 system, if you know what I mean,

When Red (no Brown) is present, Black is Neutral.
When a Brown is present (no red) Blue becomes Neutral.
3 Phase is either - Red, White, Blue OR Brown, Black Grey....with either green or Green/Yellow as Earth.
I worked on a Chinese machine last week - Black was Live, Green was Neutral, and Neutral was Yellow
