The DC buses are separated by the DC tie relay. The DC tie relay is normally open, but closes if DC power is lost on either the left or right DC bus. the DC tie relay may be opened by un-latching any BTB switch. choose the rihgt answer:
A.
the DC buses are connected with each other all the way
B.
the contacts of the DC tie relay are normally open
C.
the DC tie relay is a race between teams in which each member of the team runs or swims one section of the race
D.
un-latching any BTB switch means the BTB switch contacts can not be disconnected