What is the primary purpose of switchboards in electrical installations?

The primary purpose of switchboards in electrical installations is to subdivide large blocks of power. Switchboards function as the central point in electrical systems where electrical power is distributed to various circuits or feeders. By doing so, they effectively manage the flow of electricity from one or multiple sources and distribute it to different load areas in a building or facility.

This division of power is critical because it allows for better control and management of electrical loads, helps in protecting circuits through overcurrent devices, and enhances safety by providing a structured means to designate different power paths. Additionally, switchboards facilitate maintenance and operational efficiencies by allowing circuits to be isolated without disrupting the entire electrical system.

While switchboards may also have functionalities that align with other options—like serving as main disconnects or providing connections for emergency supply—these are secondary to their main role of power distribution.