The power cord of the vacuum cleaner should be no less than 5m

The power cord of a vacuum cleaner should be no less than 5m in length. According to the query related public information materials show that in order to make the cord longer, clean all the floors in the house, so the vacuum cleaner as much as possible, the length of the cord is designed to be the longest, 5m of the cord is to walk the line how far the cord is able to meet the distance of the use.