[DonRotolo]

Electrical circuits only use as much amperage as they need.

Water pressure is like voltage, while water flow rate is like current (Amperes).

If you turn on a faucet, it doesn't matter if the pipe behind it can supply a thousand gallons per second, the faucet will "use" what it uses. If, however, the pressure (voltage) gets too high, the faucet may burst - so keep the voltage below around 14 volts and you'll be fine. 25 Amps is the max, the circuit determines what it "uses".

Note: Switched power supplies need some load to regulate properly. be sure something is connected to it before switching it on. Maybe won't matter, but cheap insurance.

Good luck,
Don