Yikes.
You mean, you need a breaker rated for the normal rated current draw of the winch and cable sizes over distance to suit the winches current draw. Otherwise, when the winch boggs down, all the current dissapates into the cable as heat and the winch will not have the power to keep it turning and will bogg down even more and the cable will get hotter and around and around we go. If the breaker is lucky, there might be enough current spare to cause it to trip. The best way to check that is to short the cable at the winch and the breaker should pop within a second or 2 at the most. If it t