A distribution board (DB) is where we distribute the electrical supply from within the building. The main supply cable comes into the board and then distributed to the breakers and from there to all circuits. For example lights, plugs. It usually houses all the contact breakers, earth leakage unit and may house items such as a doorbell transformer and timers. Various sizes of distribution boards are available.
The main distribution board is usually in the house where the main electrical cable enters and smaller boards, together with contact breakers and possibly earth leakage units are at other points, such as swimming pool pumps, gate motors, and outbuildings. Various types of distribution boards are available; as surface mounted, flush mounted or floor standing; with closing doors or see-through plastic covers or doors and in different sizes which are determined by the number of circuits rewired within the board to which some manufacturers refer to as modules and others as “way” e.g. 8, 12, 18, 24, 36, etc. way or module.
