Article R4544-5 of the French Labour Code
Off-voltage work is carried out under the following conditions: 1° The part of the installation on which they are carried out must be identified and locked out beforehand, so that, throughout the duration of the work, no voltage remains, can appear or reappear in this part of the installation; 2° It must not be possible to re-establish voltage in the part of the installation in question until the installation has…