![]() ![]() To reduce the risk of electric shock, plug and socket systems have safety features in addition to the recessed contacts of the energised socket.Ī socket may be surrounded by a decorative or protective cover which may be integral with the socket. Some plugs have built-in fuses for safety. ![]() Some plugs have female contacts that are used only for an earth ground connection. The plug is a male connector, often with protruding pins that match the openings and female contacts in a socket. Typically no energy is supplied to any exposed pins or terminals on the socket, for safety.Ī plug is the movable connector attached to an electrically operated device, and the socket is fixed on equipment or a building structure and connected to an energised electrical circuit. Clockwise from top left: CEE 7/4 (German) plug a matching CEE 7/3 socket with exposed earth (ground) projections on circumference of socket CEE 7/5 (French) socket with projecting earth pin. Plugs and sockets may sometimes combine male and female contacts. Some multi-standard sockets allow use of several types of plug improvised or unapproved adaptors between incompatible sockets and plugs may not provide the full safety and performance of an approved socket-plug combination. Coordination of technical standards has allowed some types of plug to be used across large regions to facilitate trade in electrical appliances, and for the convenience of travellers and consumers of imported electrical goods. Today there are about 20 types in common use around the world, and many obsolete socket types are found in older buildings. A proliferation of types developed for both convenience and protection from electrical injury. Plugs and sockets for portable appliances became available in the 1880s, to replace connections to light sockets with wall-mounted outlets. Different standard systems of plugs and sockets are used around the world. Electrical plugs and sockets differ from one another in voltage and current rating, shape, size, and connector type. If you have convenient access to workplace charging, that may also impact how often you choose to charge your electric BMW overnight.AC power plugs and sockets connect electric equipment to the alternating current (AC) mains electricity power supply in buildings and at other sites. Keep in mind that how often and how long you should charge your electric BMW depends in part on what kind of home charging option you have and your daily driving needs. Use DC and high-power DC chargers as often as you need, in order to extend the mileage of your electric BMW in a short period of time. While it takes longer, it is less stressful on the high-voltage battery and also a more cost-efficient way to get your range topped up. When not driving your electric BMW for a longer period of time, leave the battery between 20% and 80% charged. However, it is not recommended to charge up to 100% every day – as this can harm the battery in the long run. You can charge the battery up to 100% when you have to rely on the entire driving range of your vehicle (for a longer trip), as occasional charging to 100% doesn’t harm the battery. Staying between 20% to 80% battery capacity should leave you with enough driving miles – and you can use iDrive or your My BMW App to set a target state of charge. ![]() The amount of miles you drive daily will determine how much charging you will need. Similar to your cell phone, charging up your electric BMW before a day’s use is simple. ![]()
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