Sub Distribution Board: It is a type of secondary distribution board fed up by the main distribution board to provide power supply within a selected area in a building such as a specific flour in a multistorey building. Before entering the main panel box, the service cable is connected to the three phase energy meter and an isolator switch. Main Distribution Board: It is the first and main breaker box connected to the 3 Phases and 1 Neutral service cable from the secondary of the distribution transformer installed on the utility pole. How to Wire 230V Dual Split Load Consumer Unit? – RCD+MCBįollowing are the different types of distribution boards used for 3-Phase & 1-Phase supply in industrial and residential applications. How to Wire 1-Phase Split Load Consumer Unit? – RCD+RCBO. 400V & 230V utilization and applications. It can be used for three phase 400V AC, single phase 230V or both single phase and three phase supply i.e. It contains multiple protective devices such as Main switch, MCB, MCCB, RCD, RCBO, Isolator, Fuses and Switches etc.ĭistribution boards are motley used in industrial, and commercial as well as domestic and residential application. IEC Wiring Color Codes – 3 & 1-Φ, 400V/230V: UK & EUĪ distribution board (also known as electric panel, breaker panel, panelboard, main breaker-box or main service panel) is a combination of protection devices and components used to safely control and distribute the power supply to the electrical appliances. 
Wiring 400V, 3-Φ & 230V, 1-Φ Load Circuits in Distribution Board.400/230V Distribution Board Wiring – Old UK Wiring Color Codes.How to Wire a 3-Phase Load in a Distribution Board?.How to Wire a 1-Phase Load in a Distribution Board?.
Balanced & Unbalanced Load in the 3-Phase & 1-Phase System.
Single Phase & Three Phase Supply in the UK & EU.
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