The decision to augment cables with external conduits does not impact explosion-proof safety measures at the site. In areas designated as explosion-proof, the norm is to use armored cables, thus bypassing the need for additional conduits.
The critical aspect is to ensure airtight sealing at the point where cables connect to junction boxes, employing explosion-proof cable glands. A key standard to adhere to is routing only one cable through each gland, avoiding the passage of multiple cables through a single point. As for external cables, adding conduits is unnecessary provided their outer casing remains undamaged.
