Article R4534-121 of the French Labour Code
When the electrical line or installation is in the low-voltage B (LVB), high-voltage A (HVB) or high-voltage B (HVB) areas, the line or installation is kept out of reach by placing effective, firmly fixed obstacles in front of the bare live conductors or parts, and in front of the neutral. If this measure cannot be envisaged, the work area must be delimited in every possible way by highly visible signs,…