Low-voltage electrical installations - Connection rules

Low-voltage connection installations are governed by standard NF C 14-100, regardless of the network operator. This standard was reissued in 2007 to take account of changing user needs and technological developments.

It also takes into account the construction of public distribution substations integrated into buildings, and in this case specifies the earth connection diagram.

Distribution system operators are referred to in this text as DSOs.

Standard NF C 14-100 specifies the conditions under which connection systems must be installed, the basic principles being those defined in the fundamental standard NF C 15-100.