Problem 14-6
A machine has a 480-V, 3-phase electrical motor as
an integral part of the machine. The total machine load
requirement is 10 A at 480 V. If the building has a
240-V, 3-phase electrical system, determine the minimum-kVA
3-phase transformer required.
Solution
The load requirement is 10 A, 480 V, 3 phase; therefore,
use Equation 14.8.