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The distribution board controls all the points up to
Load point
End point
Terminal box
None of the above
Load point
A distribution board (DB) is a component of an electricity supply system which divides an electrical power feed into subsidiary circuits. It acts as the final point of protection and control before the electricity reaches individual load points such as lights, fans, or sockets.
A distribution board (DB) is a component of an electricity supply system which divides an electrical power feed into subsidiary circuits. It acts as the final point of protection and control before the electricity reaches individual load points such as lights, fans, or sockets.
P=VтЛЕIcos╧Х тАФ represents the power delivered to a load point at voltage V and current I
The distribution board receives power from the main supply via a main switch or circuit breaker. It then distributes this power through individual sub-circuits protected by MCBs (Miniature Circuit Breakers) or fuses, which terminate directly at the respective load points where the end-use device is connected.
Distribution boards are classified under low-voltage electrical installations.
Each outgoing circuit from a DB is protected by an Overcurrent Protection Device (OCPD).
IE Rules mandate that every sub-circuit must be independently controllable.
The DB serves as the final interface between the supply authority's meter and the consumer's internal wiring.
Easier maintenance and fault localization.
Individual circuit protection ensures limited impact during electrical faults.
Requires space for installation within the premises.
Regular inspection of mechanical terminals is necessary to avoid overheating.
Residential building electrification.
Commercial office power distribution.
Industrial lighting and control circuits.
The 'End point' in terminology often refers to the termination of a cable, but in the context of system control, the 'Load point' is where the functional equipment is governed.
Terminal boxes are typically intermediate connection points or junctions, not the control point governed by the DB.
A is correct тАФ The distribution board is designed to provide individual control and protection for specific final circuits terminating at various load points.
In competitive exams, always distinguish between a 'distribution board' (for final loads) and a 'switchboard' or 'panel board' (which may control larger upstream segments).