This standard covers low tension primary cable intended for use at 50V or less in surface vehicle wiring. Requirements for cable sizes 20 through 4 previously contained in SAE Standard@ Low Tension Cable SAE J558 and SAE Recommended Practice@ Low Tension Cable Thermosetting Insulation ?CSAE J878@ are included. Cable sizes 6 through 4/0 previously specified in SAE J558 are now included in SAE J1127.