I have another question:

I was given a nice power supply board which you connect to a separate transformer. The guy was using it with a 4 axis setup using Mach3 and gecko drives. He was using a transformer to get 50vdc and 14amps. I've been reading up and it seems that I can use the board with a different transformer to get a lower voltage and amp output.

Is that true?

I read that the bridge rectifier will work as long as you don't over power the diodes. Money is the only advantage to a smaller powered BR.

In the same vain, the filtering capacitors are similar, as long as you don't exceed their voltage rating and the microF rating, they will work as well. Just store power for longer and are more expensive.

The relays on the board won't be over powered.

The only other thing that would need to be changed is the fuses.

And as an unregulated power supply, I don't have to worry about a voltage regulating electronics.