National Inspection Council for Electrical Installation Contracting a register of approved electricians. It was incorporated on 10 August 1956, and since 1 October 2005, it has been registered as The Electrical Safety Council. Electrical contractors register with the organisation to become approved contractors, meeting the NICEIC's specification of training. If work undertaken by the approved contractor is not up-to-standard, the NICEIC will correct it if necessary. Work is checked by 54 local Area Engineers. Many local authorities only give work to NICEIC-approved electricians. Most electrical items in domestic wiring are controlled from the consumer unit with its residual-current device (RCD), which since 2001 has to be installed.
Camlock (electrical) neutral and is now a phase colour, and blue which used to denote a phase is used to denote neutral. Camlock (electrical) A camlock, or also cam lock and Cam-Lok, is an interchangeable single-pole electrical connector often used in temporary electrical power production and distribution predominantly used in the North America. Originally a trade name as Cam-Lok, it is now a generic term. The most common form is the "16" series, rated at 400 amperes with 105 °C terminations. Also in common use is the "15" series ("mini-cam"), rated at 150 amperes. A larger version is made denoted as the