Source google image: https://andreasanzilustracion.com/wp-content/uploads/2018/09/gaine-electrique-exterieur-apparente-echelonnement-ac288c29a-28-galc2a8re-cache-cable-electrique-exterieur-simpliste-cable-of-gaine-electrique-exterieur-apparente.jpg
Norme electrique dtu
Source google image: https://andreasanzilustracion.com/wp-content/uploads/2018/09/gaine-electrique-exterieur-apparente-echelonnement-ac288c29a-28-galc2a8re-cache-cable-electrique-exterieur-simpliste-cable-of-gaine-electrique-exterieur-apparente.jpg