What Charles said. It's a common thing to think that more amps means more power but it isn't quite the way some people think.
Think of the circuit like you would a river. It runs at a certain speed, ok? The water flows by at the same rate all the time, but occasionally it floods because there's just too much water. Then someone comes along and makes that river wider and deeper to handle more water flow and address the lack of capacity in the river. Now all the water still flows by at the same speed, it just has more capacity. So if you had a mill that used a water wheel it would run at the exact same speed as it did before, and since you didn't change the water wheel any, it won't even know there's more water in the river - it only uses what it needs (the size of the paddles on the water wheel, essentially).
This is essentially how it works with electricity. A device only pulls the amps it needs unless there's a problem. The size of the circuit is only the maximum amperage it's designed to deliver at any given time and the breakers trip to protect that circuit when it goes over that amount (i.e. if there's a flood).