In the model of YJV22 cable, Y stands for polyethylene, J stands for cross-linked, YJ stands for cross-linked polyethylene insulation, and V stands for polyvinyl chloride sheathing. Armored cables generally have two digits in their model numbers, with the second-to-last digit indicating the presence of armor. Unarmored cables do not have armor. For example, YJV23 indicates YJ as cross-linked polyethylene insulation, V as polyvinyl chloride sheathing, and 2 as double steel strip armor, while 3 indicates polyethylene outer sheathing