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 ĄC terminations. Also in common use is the 15 series (mini-cam), rated at 150 amperes. A larger version is made denoted as the 17 series with ratings up to 760 A. A ball nose version and a longer nose standard version exist-the latter is the most common. Another version is the Posi-lok which has controlled interconnection sequencing to a panel and a shrouded connector body. The early version original connector was hot-vulcanized to the cable body; later versions use dimensional pressure to exclude foreign material from the connector pin area;the tail of the connector insulator body is trimmable to fit the cable outer diameter.
They are generally used where more than 50 A is required or 3 phase temporary connections are needed, and to connect large generators or building disconnects to distribution panels,or for test connections to load bank equipment for generator load certification; special events and the interconnection of entertainment lighting and sound equipment to power sources. They are usually found only in professional environments, where connections are performed by qualified personnel.
It is very often assumed that these colors are dictated by the National Electric Code (NEC), however they are not. The NEC only requires that green must only be used for the equipment grounding conductor (NEC Article 250.119) and only white or grey for the neutral (grounded) conductor (NEC Article 200.6). These colors may not be used for any other purpose, nor may their purpose use a different color. No other colors are specified by the NEC for general power distribution.