The cross-section of wires and cables is determined based on the permissible heating, taking into account normal and emergency...

Fluorescent tube lamps are a glass tube sealed at both ends, the inner surface of which is coated with a thin layer of phosphor....

HTML Clipboard The following can be determined by the light engineering calculation: the dump power required to obtain the specified...

General localized lighting is mainly used to illuminate electrical premises. The main sources of light for lighting the premises of...