Has anyone with more powerful printers (700W+) had any problems with inrush current with

3D Printing
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Has anyone with more powerful printers (700W+) had any problems with inrush current with the power supplies?
Right now, I am not having problems with 80A (typical, specified; haven’t actually measured) mains inrush, but I am wondering if I need actual inrush current limiters to prevent potential problems

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I don’t think that should become a problem. Not with switching power supplies. No big ass transformers, so no inrush to get worried about. At least, that’s what I always learned.

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I have a 850W ATX (Scythe, 80+ silver) PSU in my printer. These things, as well as the industrial-style 12V-only switching PSUs, are much less likely to cause any trouble with inrush currents, as they need to comply (and are usually tested against) the usual CE and FCC rulebooks. They do have big-ass capacitors, but those are usually designed in a way that doesn’t trip your breaker.
That being said, regular German mains power is rated 230V/16A (=3.6kW max), so US users might more easily run into issues there.

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inrush?

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@NathanielStenzel , basically the current spike that inductive or capacitive loads draw when they are immediately turned on; in terms power supplies, it’s usually the main filter capacitors (switch-mode supplies) or transformers (in linear supplies) that cause high inrush currents

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@Ishaan_Gov thanks for explaining it. :slight_smile:

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Cute

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1200W server Delta and Lite-on PSUs running mine, never an inrush issue, but they are high quality. Smooth stable 12VDC providing all the power needed.
@Thomas_Sanladerer spoken as if you had some experience as a product steward for a large IT company. Had a short run at this, my PSUs are EEE, CE, WEEE, RoHS, and about fifty other little symbols on a small label, compliant… Haha.

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@Brandon_Satterfield , Man, those must have cost a fortune; definitely worth it though :slight_smile: