- Two types of connection
- The principle of a connection to the network
- Electrical connection: two configurations
Depending on the distance between the road and the house, the connection of the public network to the house's meter is slightly modified. Zoom on this technical detail which is important.
Two types of connection
The connection between the public distribution network and the starting point of the power supply of an individual installation can be carried out in two ways: in aero-underground (case # 1) or underground (case # 2).
- In aero-underground, the public network is air, but enters the private domain underground.
- In the underground, the connection is buried all the way to the point of delivery.
The principle of a connection to the network
A connection to the electricity distributor network is neither more nor less than individual derivation realized from the public distribution network. This derivation must nevertheless be supplemented by elements necessary for safety and counting. It includes a box equipped with a CICC (individual main circuit breaker) fitted with fuses (this protection device serves in particular for disconnecting the connection), an electronic counter, an AGCP (general cut-off and protection device) subscriber or branch circuit breaker and cables making link between the diversion and the house.
Standard NF C 14-100 regulates the connection of the electricity network to the individual house. It only concerns the energy distributor so that the connection is made in the state of the art, upstream of the electrical panel. NF C 14-100 therefore stops at the arrival of the CICC, while the NF C 15-100 takes over at the exit of the CICC to dictate the proper implementation of the network that equips the house and its annexes (barn, garage, garden...).
The electrical connection is ensured by a buried cable, protected by a red corrugated sheath (TPC) and marked by a warning grid of red color also.
Electrical connection: two configurations
If the ERDF enclosure located within the property boundary is within 30 m of the meter, then it is provided with an individual primary circuit breaker (CCPI) and a remote data communications (or telereport) box. The energy meter and the general circuit breaker (AGCP) are then installed inside the house. The latter, which allows an emergency shutdown of the general power supply, must always be easy to access.
At more than 30m distance (see diagram opposite), the point of delivery materialized by the AGCP is thus no more in the house, but in limit of ownership. The NF C 14-100 standard stopping at this limit, the connection between the cabinet and the house must comply with standard NF C 15-100.
The realization of the liaison work is at the expense of the owners and the cost is calculated based on the distance to be traveled. In general, the distributor delivers a voltage of 230 volts in single phase, in addition to earth, a neutral with one phase. More rarely, it can provide a voltage of 400 volts in three-phase. The cable is then always composed of a neutral, but of three phases.
Specific rules according to the places
When the dwelling is more than 30 m from the road, two separate boxes are installed on the property line: one dedicated to the CICC and the telereport and the other to the AGCP circuit breaker and the meter. An additional circuit breaker is placed at the head of the electrical panel, inside the house, to allow an emergency shutdown.