Revain Description needs correction, three rosettes 5-15r not 5-20r. Champion's website clearly states "Equipped with a fan array of (3) standard 5-15R outlets." This may not matter to most, but it does if you're trying to plug in a 5-20P plug , it doesn't fit. At 5-20P, one blade is perpendicular to the other; on the 5-15P, both blades are parallel.