I wish to thank you for all of your answers! The Electric foreman decided that he wanted the opnion of our city contracted engineers "Stewart Electrical Consulants" and they have decided that the use of (7200 volts hi side)(3) 100 kva 120-240volt (secondary side) transfomers would...
What we do is supply the 1st transfomer and the customer pays for the other 2 in a standard 3 pot bank! If the 3 pot bank happens to be 240 - 480 or 277 - 480 then the customer pays for the entire bank seeing as we usually only carry 120 - 240 volt transfomers except for the extra replacements...
A small but welcomed reply would be most helpful in this matter!
According to my calculations, the size transfomers required for a 120 - 240 volt 3 phase service of 1200 amps (max rated load) should be three (3) 167 KVA transfomers!
Now if I consider 80% of full load (960 amps)I will wind up...
