3-phase transformers compare to 1-phase transformers ________
3-phase transformers compare to 1-phase transformers ________ Correct Answer More economical
3-phase transformers are also used to power large motors and other heavy loads. A three-wire three-phase circuit is more economical than an equivalent two-wire single-phase circuit at the same line to ground voltage because it uses less conductor material to transmit a given amount of electrical power.