Approved Document M of the Building Regulations states that consumer units/fuseboxes should be mounted so that the switches are 1350-1450mm above floor level. If you are looking to have electrical work done in your home, a registered electrician can advise you further. A distribution box is the heart of any electrical system. It takes the incoming power and safely distributes it to different circuits throughout your building. However, the key to. ic to 400kV overhead lines. Generally, distribution boxes can be divided into three levels of secondary protection, that is, three levels of distribution boxes: general. Is distance satisfactory to protect power distribution boxes (breaker boxes, disconnects ranging from anywhere from 50 volts to 440 volts) from damage in active warehouses with stacked material, fork truck traffic, and pedestrian traffic; or does there need to be a protective barrier? If distance. The main distribution box shall be located in the area close to the power supply; the distribution box shall be installed in the area with relatively concentrated electrical equipment or load; the distance between the distribution box and the switch box shall not exceed 30m; the switch box shall be. Essential Energy has prepared this guide to inform anyone working on and/or around buildings or sites that are connected to or in the vicinity of electricity assets of the safe distances that must be maintained from electricity assets, overhead or underground. This guide also applies to developers.