An Irish Country Cottage: An Irish Country Novel

Purchase includes free access to book updates online and a free trial membership in the publisher's book club where you can select from more than a million books without charge. Chapters: Ac Power Plugs and Sockets, Mains Power Around the World, Bs 1363, Iec 60269, Common Electrical Adaptors in Hong Kong and the United Kingdom, Bs 546, Single-Phase Electric Power, Electrical Wiring in Hong Kong, Iec 61511, Pro Electron, Iec 61508, Bs 7671, Nfpa 72, Tia J-Std-607, Nfpa 70b, Wall Outlet. Excerpt: Industrial and multiphase power plugs and sockets AC power plugs and sockets are devices for removably connecting electrically-operated devices to the commercial power supply . An electric plug is a male electrical connector with contact prongs to connect mechanically and electrically to slots in the matching female socket. Wall sockets (sometimes also known as power points , power sockets , electric receptacles , or electrical outlets ) are female electrical connectors that have slots or holes which accept and deliver current to the prongs of inserted plugs. To reduce the risk of injury or death by electric shock , some plug and socket systems incorporate various safety features. Sockets are designed to accept only matching plugs and reject all others. Terminology There are substantial differences between American and British nomenclature related to power plugs and sockets. British English: American English: Meaning In the United States , the live contact may be called live , hot or ungrounded . The neutral contact may be called cold , neutral , return , the ground ed conductor , or (in the National Electrical Code ), the identified conductor . The earth contact is called ground or the ground ing conductor . In the United Kingdom the word line is occasionally used to denote the live terminal or wire. In electrical engineering, the line voltage is that between the live conductors of the three-phase distribution system, while the phase voltage is that between live and neut...