joining transformers

[glinjik]

Hi not wanting to burn my precious transformer can someone tell me if this is correct, if I join terminal 3 and 9 and tap off 2 and 10 it should give me roughly 28v?

its one transformer with 2 sets of identical windings 

[not1xor1]

Hi not wanting to burn my precious transformer can someone tell me if this is correct, if I join terminal 3 and 9 and tap off 2 and 10 it should give me roughly 28v?

its one transformer with 2 sets of identical windings

if there is no continuity between 3 and 9 (i.e. if they are really separated windings) just do it and measure the voltage between 2 and 10. If the phase is correct you get 28V otherwise less than 1V.