Although the minimum depth of clear working space required for equipment operating at 600 Volts or less varies based on nominal voltage to ground and whether there are exposed live parts or grounded parts, the minimum width of the required clear working space is the width of the equipment or ______________ whichever is greater.
a. the width of the doorway
b. 1.5 times the width of the equipment
c. 2 times the width of the equipment
d. 3 feet