When the two leads from each coil are drawn on a schematic, if one lead from each coil is connected in the center, the drawing looks like its forming a "Y" if there are 3 coils. If there are 5 coils, it looks like a 5-pointed star.
I always assumed from books that in N America Star was called " wye" ( can't imagine why it couldn't be "Y") and delta is called mesh.
Surprisingly here the terms star and delta seem almost universal. Saves me learning a new language.
Flux[ Parent ]