How so?

The spec sheet says 3 amps at 250 volts.

That's 750 watts. (W = V * A)

Good old high school math says that A = W / V.

Plugging in 8 Volts and 750 watts, we get A = 750 / 8, which is 93.25 amps.

This is what it is capable of. Not what we actually use. What we actually use as way below that, generally 5 to 8 amps at full stall. Which, at 8 volts, is 40 to 64 watts. Well within the specs.

Again, it's the wires that are the limiting factor.

...jim