Armour in cables not only act as Earth Continuity Conductors (ECC), but they also protect the single core strand cable or solid cable from externally induced forces of nature or mechanical stress from other installation processes – like heavy equipment installed above the cabling. Because it is a more sturdy and robust cable, you’ll typically see Non-Magnetic Steel Tape Armoured Cable, such as 11kv single core cable or 33kv cable, used outdoors.
Non Magnetic Steel Tape Armoured Cable is extremely heavy to transport, handle and install, especially if they are very long-length. That’s why applications, calling for single core underground cable, typically use armoured cabling buried in underground conduits and ditches. Trucks with armoured 11kv single core cable unroll them at the worksite, and crews bury them in the trench dug specifically for that purpose.
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