![]() ![]() Worldwide, many different mains power systems are found for the operation of household and light commercial electrical appliances and lighting. Power systems įor a list of voltages, frequencies, and wall plugs by country, see Mains electricity by country. The majority of customers on the island of Newfoundland deal with Newfoundland Power as their service provider, and thus electricity is more commonly called simply "power" in that province. Although there is an entity named Newfoundland and Labrador Hydro, that company is primarily a hydroelectricity generator, though it also directly serves customers in Labrador and some other parts of the province. This is also reflected in names of current and historical electricity utilities such as Hydro-Québec, BC Hydro, Manitoba Hydro, and Hydro One (one of the entities resulting from the breakup of Ontario Hydro). More than half of power in Canada is hydroelectricity, and mains electricity is often referred to as "hydro" in some regions of the country. In the UK, mains electric power is generally referred to as "the mains". In the US, mains electric power is referred to by several names including "utility power", "household power", "household electricity", "house current", "powerline", "domestic power", "wall power", "line power", "AC power", "city power", "street power", and "120 (one twenty)". Terminology A table lamp connected to a wall socket (the mains) Non-interchangeable plugs and sockets in different regions provide some protection from accidental use of appliances with incompatible voltage and frequency requirements. Travellers' portable appliances may be inoperative or damaged by foreign electrical supplies. Other combinations exist, for example, 230 V at 60 Hz. In North America, the most common combination is 120 V and a frequency of 60 Hz. In much of the world, a voltage (nominally) of 230 volts and frequency of 50 Hz is used. The voltage and frequency of electric power differs between regions. People use this electricity to power everyday items (such as domestic appliances, televisions and lamps) by plugging them into a wall outlet. It is the form of electrical power that is delivered to homes and businesses through the electric grid in many parts of the world. Mains electricity or utility power, power grid, domestic power, and wall power, or, in some parts of Canada, hydro, is a general-purpose alternating-current (AC) electric power supply. ![]()
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