Electricity can kill. Each year, the use of electricity on construction sites results in a number of accidents. People suffer electric shocks, burns and other injuries. Those using the equipment may not be the only ones at risk, for example faulty equipment may lead to a scaffold becoming live and short circuits can result in fires. This publication provides practical advice on precautions that can be taken to reduce the risk of accidents during the construction phase of a project. It is intended to be of interest to managers, subcontractors and those involved in the control of the installation and use of electrical equipment on construction sites.