Source google image: https://www.legrand.fr/sites/default/files/styles/lar_700/public/pro_norme_nfc15_100_cprises_med_9_1_1.jpg?itok=W2m62j5p
Norme electrique par pieces
Source google image: https://www.legrand.fr/sites/default/files/styles/lar_700/public/pro_norme_nfc15_100_cprises_med_9_1_1.jpg?itok=W2m62j5p