Hubbell wiring Device-Kellems offers a full line of innovative, high quality, series 15 and series 16 single pole plugs, receptacles and accessories for the most demanding environments. Single pole devices are the right choice for supplying temporary electrical power distribution for entertainment, theme parks, carnival equipment, concerts, movie making and numerous other applications requiring temporary power. Single pole devices have been designed with ease of assembly and disassembly in mind, no special tools are required. A high strength non-conductive retaining screw is all that is needed to securely lock the contacts to the insulated sleeve.