electrical advice needed

Hi,
I'm building a power supply and have some questions... the transformer I'm using has dual secondary coils and can be configured for 48V @ 4A or 24V @ 8A. I was planning on using the 48V configuration to use with a 3.3A stepper motor, but I've seen on the Gecko site that this will actaully translate into 67VDC after connecting a bridge rectifier & capacitor. My question is, will that be 67VDC @ 4A? Or would that turn into 67VDC @ 2.8A, so as to conserve the 192 Watt rating?
Secondly, I'm trying to determine what the actual current draw will be from the 110VAC side... if the transformer can supply 192 Watts, then how much current would it be safe to assume it will draw from the AC? I'm planning on using four of these (one for each axis), so I'm concerned about having a cord & switch rated high enough. I'm assuming the transformers aren't 100% efficient, so how much higher than the rated power should I go to be safe?

Thanks in advance for any advice,
Rick



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