I hope I have this in the right forum. I was wondering how mathematicians and or engineers derived the square root of 3 as a constant for delta and wye balanced 3 phase transformers mostly? If not an answer articles to read is fine, anything to point me in the right direction.

My guess would be that there are three

branches and it has something to do with the pythagoreom thereom. I am not sure? If my spelling and or grammer is in some way wrong, I apologize for my insolence.

Thank you, any help is greatly appreciated.