使用外部導管增強電纜的決定不會影響現場的防爆安全措施. 在指定防爆區域, 標準是使用鎧裝電纜, 從而無需額外的管道.
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.