The correct assembly, as illustrated in the diagram below, is to install EYS sealing fittings verticality, while EZS horizontality, although this type of coupling can also be installed horizontally, thanks to its design that allows to rotate the filling inlet, in order to bring. The correct assembly, as illustrated in the diagram below, is to install EYS sealing fittings verticality, while EZS horizontality, although this type of coupling can also be installed horizontally, thanks to its design that allows to rotate the filling inlet, in order to bring. When installing, please follow the instructions strictly and ensure installation by a professional. Open the terminal chamber cover, connect the cables through the cable gland to the terminals, ensuring both the internal and external ground wires are correctly connected. After confirming there. In electrical equipment in which it's necessary to have a physical separation for the limitation of the flame passage, like those installed in places with a potentially explosive atmosphere and the possible presence of gas and dust, must be used specific limitation devices such as sealed cable. This article outlines the essential principles for connecting explosion-proof distribution boxes with galvanized pipes, providing practical details and best practices for effective implementation. This article reviews important sealing requirements for wiring in hazardous locations, specifically locations designated Class I, Division 1 and 2. s were made according to the "American" system. This meant that all connections between the various boxes were made throu made through steel pipes which protect cables.