Commercial / Institutional Buildings / Structures - Power Distribution and Controls | Csa c22.2 No. 18.3;Csa c22.2 No. 85;Ul 514b | Federal Specification a-a-50552, Nema/ansi Fb-1, Military Specification Number W-F-406d, W-F-406e, W-F-408d, W-S-610d