“A distribution board, also known as a panelboard, breaker panel, or electrical panel, is an essential component of an electrical system that distributes electrical power to various circuits within a building or construction site. It receives electricity from the main power supply and then divides it into smaller branch circuits that power different appliances, devices, and equipment throughout the construction project.
Different types of distribution boards commonly used on large construction projects include:
Main Distribution Board (MDB): The main distribution board is the primary point of power entry for the entire construction site. It receives electricity from the main power source (transformer or generator) and distributes it to the sub-distribution boards and loads across the project.
Sub-Distribution Board (SDB): Sub-distribution boards are secondary distribution panels that are installed at specific locations within the construction site. They receive power from the main distribution board and further distribute it to local loads or smaller groups of circuits, usually based on geographical or functional criteria.
Final Distribution Board (FDB): Final distribution boards, sometimes referred to as consumer units, are located at individual building units or specific areas to supply power to the end-use devices, lighting, and appliances. They provide the final stage of distribution within a localized section of the project.
Motor Control Centers (MCC): Motor control centers are specialized distribution boards that manage and distribute power to large motors and industrial machinery on the construction site. They include motor starters, variable frequency drives (VFDs), and other control equipment.
Lighting Distribution Board (LDB): This distribution board is dedicated solely to the distribution of power to lighting fixtures across the construction site. It allows for centralized control and protection of lighting circuits.
The distribution boards play a crucial role in ensuring that electrical power is distributed safely and efficiently throughout the construction project. They offer several key functions:
Circuit Protection: Distribution boards include circuit breakers or fuses that protect each circuit from overcurrent’s and short circuits. In case of a fault or overload, these protective devices interrupt the current flow to prevent damage to the wiring and equipment.
Load Management: Different distribution boards help organize and manage the electrical load on the construction site, preventing overloading of circuits and ensuring a balanced distribution of power.
Isolation and Switching: Distribution boards provide a means to isolate individual circuits or sections for maintenance and repairs without affecting the rest of the site’s electrical supply.
Centralized Control: The distribution boards serve as a central control point for monitoring and managing electrical circuits, making it easier for engineers and electricians to troubleshoot issues and maintain the electrical system.
Overall, distribution boards are vital components that enable the safe and efficient distribution of electrical power in large construction projects, ensuring a reliable supply of electricity to various areas and equipment.”