Which of the following voltages are not safe for a 208-V motor to operate?
A) 170 volts
B) 220 volts
C) 238 volts
D) both a and c

Question

Quizplus · Accepted Answer

A 208-V motor should operate within +/- 10% of its rated voltage. The rated voltage is 208 V, so the safe operating range is 187-229 V. Therefore, options A (170 V) and C (238 V) are not safe for a 208-V motor to operate, while option B (220 V) is within the safe range.

Which of the Following Voltages Are Not Safe for a 208-V