jagowilson wrote:carl_m1968 wrote:What is the output current or wattage? It needs to be 30 amps or 360 watts at minimum.
Just wanted to clarify this, 30A is not a minimum but an upper bound maximum. Most setups won't consume more than 200 watts. Cheap bed heaters are usually in the range of 40 to 60 watts, and hotends consume a maximum of 40 watts typically.
Just wanted to clarify this. There is no upper maximum when it comes to the output current of a power supply. Having more than needed is always better than having just enough. I have a 75 AMP on my Kossel Mini and that would be 900 watts for those not know the math. The system will not use more than it needs so there is no danger in having surplus current.
There is no upper limit, but there is a very firm lower limit and that should be a minimum of 100 watts higher then max system draw. The issue is that 80% of all the power supplies supplied for 3d printers do not do their rated output and usually do about 30% less once under load.. There is no body that governs them so they do not have to worry about defending themselves if a supply does not meet the rated output.
That's why I use HP redundant server supplies that have been converted. Those must do their rated output under max load.
Printing since 2009 and still love it!
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