Thanks yes I knew 127 was for 220 phase to phase but I always struggle with the maths thanks for the info its been most helpful
No problem!
I read about it so often that I've really learned those voltages by heart, that's why I notice such inconsistencies.
I think the big issue with maths is who becomes a teacher. Naturally people who hated maths because they had a hard time understanding it are quite unlikely to study it and become teachers. Unfortunately that means most teachers don't realise what it feels like to be "mathematically challenged" and what those who are need.
I tried studying electrical engineering for two painful semesters... worst time of my life! Few people have ever been as successful making me feel dumb as those maths geniuses! Later I switched to a more basic course (non-academic) and passed with flying colours. I can do maths when I need it and someone explains it to me in a way I understand but otherwise I'm lost.
