Electrical conductors belonging to various electrical circuits.

Electrical conductors belonging to several electrical circuits can be installed with the same protection if the following conditions are met: - all conductors are insulated for the same voltage; - between the sections of the conductors there is a difference of no more than three steps; - each circuit is protected against overcurrents; electrical tubes are installed in protective tubes with diameters chosen according to the type of section and the number of tubes. the holes in the building elements to protect the electrical conduit are made with a minimum diameter of 15 mm.