... , but not external mechanical forces. Laying single core cable in magnetic ducts is not allowed.YJLVAl. Conductor, XLPE Insulated, ... , but not external mechanical forces. Laying single core cable in magnetic ducts is not allowed.YJLYAl. Conductor, XLPE Insulated, ... ,Steel Tape Armored,PVC Sheathed Power CableSuitable for burying in ground, Able to bear external mechanical forces but large pulling ...