If the supply voltage is 220 volts 60 Hz, what is the operating voltage of the motor controller control circuit illustrated in figure A of the illustration? EL-0011

Question

If the supply voltage is 220 volts 60 Hz, what is the operating voltage of the motor controller control circuit illustrated in figure A of the illustration?  EL-0011

Accepted Answer

Option D: 220 volts AC. Motor controller control circuits on marine switchboards often derive their control voltage directly from the main power supply via step-down or direct connections. When supplied by a 220-volt system, the control circuit operating voltage matches at 220 volts AC per IEEE 45.