A 480-volt, 3-phase service panel is to be installed to serve only 3-phase motors. The power company has set a pad-mounted 277/480-volt, 3Ø transformer for the new service. You will need to install which of the following between the transformer and the service panel?I. three ungrounded conductors II. one grounded conductor
Select one:
a.I only
b.II only
I & II