B - NF C 15-100 standard “Low-voltage electrical installation”
This standard, application of which is mandatory, defines the implementation of luminaires in fixed installations, together with the electrical supply to them.
The key aims of NF C 15-100: increase user safety, allow proper functioning of the electrical installations, and adapt to current needs (more domestic appliances and multimedia equipment: TVs, computers, etc.).
Installations concerned: the new NF C 15-100 standard applies to new buildings.
The new Amendment 5 to the NF C15-100 groups together the new standards provisions applicable to electrical installations in private residential premises.
These prescriptions apply to structures for which the planning application was filed after 27 November 2015.
Provisions relating to lighting in COMMUNAL AREAS:
The lighting installation in COMMUNAL AREAS of residential buildings is subject to the prescriptions of the accessibility regulations (Order dated 24 December 2015 relating to accessibility for new residential buildings), in particular concerning minimum illuminance values and the characteristics of the lighting control facilities.
The illuminance levels required for COMMUNAL AREAS are laid down in the accessibility regulations, in particular for outdoor circulation areas, horizontal indoor circulation areas, internal stairways in accessible COMMUNAL AREAS, and car parks.
Manual control facilities for COMMUNAL AREAS:
Manual lighting control devices located in outdoor circulation areas and in COMMUNAL AREAS must be:
- indicated by an illuminated indicator,
- positioned in accordance with the prescriptions of the accessibility regulations.
Automatic devices: In the case of operation by presence detection, the provisions of the accessibility regulations must be applied.
Additional provisions for building entrances, stairways, access balconies, and corridors: lighting circuits for building entrances, stairways, access balconies, and corridors shall be controlled by a timer with a device allowing continuous operation or by an automatic device.
Where lighting is on a timer, it must be extinguished gradually. This requirement can be met, in particular, by a gradual reduction or by steps of illumination level, or by any other extinction warning system. One timer must not control a group of more than five floors.
In addition to the controls installed within each group, provision must be made for an additional control on the floors above and below each group, in order to allow them to be lit prior to accessing them.
The lighting for an access balcony or internal corridor may be controlled by the same timing device as for a stairway leading to it. However, if more than three luminaires are necessary for lighting an access balcony or internal corridor, a separate timing device is necessary.