Deals with the particular requirements for safety of mains or battery-supplied portable combined machines and mobile equipment with or without a built-in battery charger, having a chassis with or without traction drive, intended for commerciall and industrial use indoors or outdoors for dry or wet treatment of hard floors or of floors with carpeting. Does not apply to the following machines for commercial and industrial use: floor treatment machines (IEC 60335-2-67), spray extraction appliances (IEC 60335-2-68), wet and dry vacuum cleaners (IEC 60335-2-69).