Section 2: Requirements relating to the design and installation of electrical installations

The installations are designed and built in such a way that : 1° No dangerous active part is accessible to workers, except in premises and locations where there is a particular risk of electric shock, which are subject to special requirements laid down in Articles R. 4226-9, R. 4226-10 and R. 4226-11 ; 2° In the event of an insulation fault, no earth presents, with another earth or a conducting…

All measures are taken to ensure that the active parts or grounds of an installation are not subjected to voltages which could be dangerous to persons, due to their proximity to an installation with a higher voltage range, or due to an earth fault in such an installation.

All measures are taken to eliminate the risks associated with the normal rise in temperature of electrical equipment, in particular the risk of burns for workers or the risk of damage to neighbouring objects, in particular those on which the equipment is supported.

The characteristics of the equipment are chosen in such a way that it can withstand the mechanical and thermal effects produced by any overcurrent without harm to persons and, where appropriate, without impairing its safety functions, for the time necessary for the operation of the devices intended to interrupt this overcurrent. The switchgear and controlgear used for connection, isolation, control and protection are chosen and installed in such a way…

Isolating devices separate the electrical installation, circuits or loads from their power sources and enable any operation on the installation, circuits or loads to be carried out safely.

In the event of an emergency, devices are available to cut off the power supply to circuits or groups of circuits in the event of an unexpected danger of electric shock, fire or explosion.

Electrical conduits are installed in accordance with the specific instructions for each installation method.

Circuits and equipment are identified permanently. The location and marking of conduits enable the installation to be checked, tested, repaired or converted. Conductors are marked to identify their function in the circuits.

Electrical equipment is selected and installed with due regard to voltage and in such a way as to withstand in complete safety the environmental conditions specific to the location in which it is installed and to which it may be subjected.

In premises or locations where there is a risk of fire or explosion, electrical installations are designed and built with these risks in mind.