Electrical installations of buildings - Part 5-54: Selection and erection of electrical equipment - Earthing arrangements, protective conductors and protective bonding conductors— 21 стр.
Connecting devices. Electrical copper conductors. Safety requirements for screw-type and screwless-type clamping units, General requirements and particular requirements for clamping units for conductors from 0,2 mm$u2 up to 35 mm$u2 (included)— 32 стр.
