If you are using an extension lead fitted with a connector, it is vitally important to make sure the pronged half (A) is fitted to the lead connected to the equipment and not to the mains.
Always fit the extension lead connections together before inserting the plug into the mains socket outlet. It is recommended that you always use a three core extension lead.
When using an extension lead, make sure that it is fully unwound (it could overheat if rolled up) and of sufficient current capacity. Most ready-made extension leads have the maximum wattage of appliances which can be used with it marked on them. The tool you're using should also have its wattage marked.
Never use extension leads for permanent installations such as greenhouse lighting or heating.
Use an extension lead with rubber connectors outdoors. Rubber connectors are designed to help keep out dampness. Never use 'taped' connections.
Never fit a plug to both ends of an extension lead, live prongs are extremely dangerous.
Produced in association with Northern Ireland Electricity - www.nie.co.uk