help!!!
Easily. A speed 280 shouldn't draw more than about 5 amps (it will if you put the wrong prop on it, but not for long!). A speed 400 is a larger and much more powerful motor. It will come much closer to 15 amps. It may be too much, I'm not sure.
Speed 280BBs are 280 sized but more powerful. Speed 300s are very close to the size of a 280 but much more powerful; they tend to spin a lot faster.
A speed 480 is a longer, more powerful 400. There are also speed 600s.