Bus-bars are conductors to carry power among the various components in the power circuit in an outdoor station or distribution board.
They are to be rated to carry the maximum rated current continuously and short-circuit current for a short time without damage.
The O&M issues to be cared for:
• Check connections for looseness and overheating, and check the bus bar for discolouration
• Check bus bars are properly colour coded (Red, Yellow or Blue) to represent the phases
• Check bus bars are properly enclosed within panels