Grounding requirements for equipment operating at "over 150 volts to ground" apply to which of the following voltage systems?I. 120/240, 1Ø, 3-wire II. 120/208, 3Ø, 4-wire III. 120/240, 3Ø, 4-wire
Select one:
a.I, II & III
b.I & II only
c.II & III only
d.II only
e.I & III only
f.III only
