How much power needed?

Hey,

I´ve just looked into buying a new extruder motor and I´m going through the Nema 17 and their all around 2-2.5 amps. This made me question my power supply. I have 5amps on my printer and 12amp on the heated bed. So with the new motor drawing 2amp and having 3 more motors and a heated nozzle in there that seems not enough.

My question, what your idea of how much a normal reprap need (excluding the heated bed)?

Cheers

I'm pretty sure that the 5 amps to the controller includes the stepper draws. You should be fine if what you have is working already.

Most commonly the motors will be set to draw less than an amp each, even if they are rated for 2+ amps.

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Im thinking about buying this one [www.ebay.de] to exclude error sources.

I have some weird extruder behavior so I ordered a stronger motor but im underfeeding it this wont do me any good.