How much amperage for PSU? HomePage › Forums › Power supply questions › How much amperage for PSU? Tagged: Power Supply This topic has 2 replies, 2 voices, and was last updated 6 years, 7 months ago by Craig Pattison. Viewing 3 posts - 1 through 3 (of 3 total) Author Posts June 16, 2016 at 2:42 pm #2031 Craig PattisonParticipant Hello, Im looking at running 36v form a dedicated PSU. I have sherline stepper rated ate 2.5 3 amps. My thought was to go with a 4-5 amp rated supply. Your thoughts? June 16, 2016 at 4:49 pm #2032 BrianVKeymaster This is covered in the Power Supply FAQ! June 16, 2016 at 5:06 pm #2035 Craig PattisonParticipant Thanks Brian, I should have dug a little further. Author Posts Viewing 3 posts - 1 through 3 (of 3 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Type in the text displayed above Log In Log in / Register