Connect all three phases from the input power supply to the input of the MCCB. If the DB has multiple Neutral links then connect all the neutral links. 3 phase DB box wiring is an essential component of electrical installations in commercial and industrial buildings. Three-phase distribution boards are used in large factories, buildings, manufacturing units. A distribution board is the combination of protective devices such as Main switch, MCB, MCCB, RCD, RCBO, Isolator, Fuses and Switches etc. A distribution board is also known as main breaker box, electric. 3 Phase Distribution Board Layout and Wiring Diagram / Three phase DB Wiring with New Color Code Pilot Risks Everything on the World's Shortest Runway A little trick Turn hydraulic jack into a million-dollar tool Learn how to wire a 3-phase distribution panel in this quick and easy guide! Perfect. A 3-phase distribution board divides the incoming 3-phase supply into multiple single-phase outgoing circuits, allowing for more efficient electrical power distribution throughout your factory or workspace. It's also important to make sure that these systems are wired properly in order to avoid any. Since the Utility distributes power from a Three Phase Transformer, a prime requirement regarded by the Utility company is to make sure that the three phases of the transformers to be balanced in load distribution. Though a 100% balanced load cannot be achieved most of the time, a higher percentage.