... environment stress-resistant and chemical corrosion-resistant, but also simple structure, light weight, no restriction by laying drop, and high ... not external mechanical forces. Laying single core cable in magnetic ducts is not allowed.YJLVAl. Conductor, XLPE Insulated, PVC ... not external mechanical forces. Laying single core cable in magnetic ducts is not allowed.YJLYAl. Conductor, XLPE Insulated, ...