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Related Wiring Tutorial: Wiring of the Distribution Board (Single Phase Supply From Utility Pole & Energy Meter to the Consumer Unit)Ī distribution board unit installed in the buildings which firstly receive the incoming single phase electric supply (AC low voltage (LV) ( 230V AC or 120V AC in US) from transformer secondary through electric pole and energy meter or the distribution company’s electric service provider outlets is known as Main Distribution Board.following are the types of Distribution boards. Distribution board is also known as “Fuse Board“, “Panel Board” or “Consumer Unit“.

RCD (DP) = Residual Current Devices for Safetyĭistribution board is a safe system designed for house or building that included protective devices, isolator switches, circuit breaker and fusesto connect safely the cables and wires to the sub circuits and final sub circuits including their associated Live (Phase) Neutral and Earth conductors.

Double Pole MCB (DP) = The Isolator or Main Switch).How to Wire RCD (Residual Current Device) ?.Wiring Accessories for Single Phase Distribution Board.