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Location of main board is near to
Load point
Instruments
Energy meter
Switch board
Energy meter
The main distribution board (MDB) is essentially the primary hub for electrical distribution in a building and must be located immediately after the energy meter. This placement ensures that the incoming service line is effectively protected and metered before being divided into various sub-circuits.
The main distribution board (MDB) is essentially the primary hub for electrical distribution in a building and must be located immediately after the energy meter. This placement ensures that the incoming service line is effectively protected and metered before being divided into various sub-circuits.
P=VIcos╧Х тАФ The power relationship metered by the energy meter
IratedтАЛтЙеIloadтАЛ тАФ Requirement for main board circuit breaker selection
According to standard electrical safety codes and Indian Electricity (IE) rules, the service connection enters the energy meter first to record total consumption. The output of this meter is directly connected to the main board (main switch/fuse unit) to allow for complete isolation and protection of the entire internal electrical installation.
The energy meter must be installed in a location easily accessible to the utility provider for reading.
The main board follows the meter to act as the primary point of control for the premises.
Short distances between the meter and main board reduce voltage drop and potential for unauthorized tapping.
Conforms to safety regulations to ensure the main switch can de-energize the entire load.
Ease of maintenance and monitoring.
Protection of total load at the point of entry.
Requires secure housing to prevent tampering.
Space must be dedicated near the entrance.
Residential building service entrances.
Commercial electrical distribution panels.
In multi-story buildings, meters are often grouped at the ground floor with main boards for each apartment located within the residence near the entrance.
Option B (Instruments) are typically located on the switchboard itself, not the main board. Option A (Load point) is the terminal, not the start.
C is correct тАФ The main board is installed immediately after the energy meter to act as the primary control and protection point for the internal wiring.
Always remember the order: Service Cable тЖТ Energy Meter тЖТ Main Switch/Board тЖТ Distribution Board.