What is the difference between yttwy and ng-a btly mineral insulated cables?
Ng-a (btly) series isolated fire-resistant ACSR Cables are flame-retardant and fire-resistant cables. The insulating layer is phlogopite tape (fire resistance temperature 750 ℃ ~ 800 ℃), the sheath is aluminum tube (fire resistance temperature 660 ℃), and the outer sheath is plastic. It is not in the same category as yttw and bttz mineral insulated … Read more