Switchboard2

In teh event of a main generating system failure, an emergency supply of electricity is required for esential services. The emergency generator must be rated to provide power for the driving motors of the emergency bilge pump, fire pumps, steering gera, watertight doors and possibly fire fighting equipment. Emergency lighting for occupied areas, navigation lights, communications systems and alarm systems must also be supplied.

Switchboad are divided into two classes: i.e. AC systems and DC systems. Switchboards may be of the open type in which all the essential switch gears are exposed on the front of the panel, or of the deadfront type in which all the live parts are installed behind the panels and only the operating handles and instruments are on the front.