Electricity flows in and out of homes continuously, with appliances picking up whatever current they need to operate. Most of us take this uninterrupted supply for granted - until there's a problem. You may need to take action if one of the various circuits distributing electricity round the home gets overloaded and the supply cuts off, or if a particular appliance stops working. Bear in mind that many electrical tasks may require detailed electrical knowledge. Call in a qualified electrician if you are in any doubt.