The wire inlet and outlet of explosion-proof distribution box should be set at the bottom of the box, not at the top, side, back or door of the box; The incoming line and outgoing line shall be sheathed and bundled, and waterproof bending shall be made; The conductor bundle shall. The wire inlet and outlet of explosion-proof distribution box should be set at the bottom of the box, not at the top, side, back or door of the box; The incoming line and outgoing line shall be sheathed and bundled, and waterproof bending shall be made; The conductor bundle shall. When installing and wiring an explosion-proof distribution box, it is essential to follow strict safety protocols and national electrical standards (e., IEC, NEC, or local safety regulations). Below are the general steps for wiring an explosion-proof distribution box: Before beginning any. R. Often, due to non-standard operations by some technicians, issues like damaged power lines, mainboard components, fuses, and communication failures occur. Approved for installation in explosion hazard areas Junction boxes JB2221-544-2X (11-59) are designed for power distribution during installation, repair and upgrade of power cables and utility networks in explosion hazard areas. The box is mounted onto a nearby metal structure.