<![CDATA[SoliForum - 3D Printing Community — Insufficient power with cheap prusa i3]]> 2016-04-19T20:45:00Z PunBB https://www.soliforum.com/topic/14573/insufficient-power-with-cheap-prusa-i3/ <![CDATA[Re: Insufficient power with cheap prusa i3]]> good news

]]> https://www.soliforum.com/user/6797/ 2016-04-19T20:45:00Z https://www.soliforum.com/post/121432/#p121432 <![CDATA[Re: Insufficient power with cheap prusa i3]]> PSU came today:) It's now printing with the fan at 100% like a champ

]]> https://www.soliforum.com/user/9974/ 2016-04-19T18:39:35Z https://www.soliforum.com/post/121423/#p121423 <![CDATA[Re: Insufficient power with cheap prusa i3]]> You're welcome.

]]> https://www.soliforum.com/user/2291/ 2016-04-16T00:22:56Z https://www.soliforum.com/post/121156/#p121156 <![CDATA[Re: Insufficient power with cheap prusa i3]]> Alright ordered a power supply from PRINTiT:) Thanks for all your help guys, I'm learning lots here.

]]> https://www.soliforum.com/user/9974/ 2016-04-15T23:55:31Z https://www.soliforum.com/post/121155/#p121155 <![CDATA[Re: Insufficient power with cheap prusa i3]]> 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.

]]> https://www.soliforum.com/user/7731/ 2016-04-15T22:52:57Z https://www.soliforum.com/post/121154/#p121154 <![CDATA[Re: Insufficient power with cheap prusa i3]]> Should be there in a timely manner, yes.

]]> https://www.soliforum.com/user/2291/ 2016-04-15T22:14:53Z https://www.soliforum.com/post/121147/#p121147 <![CDATA[Re: Insufficient power with cheap prusa i3]]> Well I'd rather have plenty of power than barely enough. I'm guessing shipping to here in south west Wisconsin would be pretty quick from PRINTiT:)

]]> https://www.soliforum.com/user/9974/ 2016-04-15T21:57:01Z https://www.soliforum.com/post/121145/#p121145 <![CDATA[Re: Insufficient power with cheap prusa i3]]> 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.

]]> https://www.soliforum.com/user/7321/ 2016-04-15T21:00:30Z https://www.soliforum.com/post/121140/#p121140 <![CDATA[Re: Insufficient power with cheap prusa i3]]> Regarding computer PSUs, I personally don't recommend them unless you know how to properly load them. Without a proper load, they provide very inconsistent voltage on the 12V rails, and can even overheat and shut down if this goes on for too long. This was my experience with two separate ATX supplies, one manufactured in 2014 and one in 2002. I recommend the supernight, if you have questions feel free to contact us. If you buy it from us, you can pick up an AC power cord as well if you need one.

]]> https://www.soliforum.com/user/7321/ 2016-04-15T20:56:56Z https://www.soliforum.com/post/121139/#p121139 <![CDATA[Re: Insufficient power with cheap prusa i3]]> Some local guys sell them http://www.printitindustries.com/collec … wer-supply its a common psu that a lot of us around here use

]]> https://www.soliforum.com/user/6797/ 2016-04-15T20:40:23Z https://www.soliforum.com/post/121137/#p121137 <![CDATA[Re: Insufficient power with cheap prusa i3]]> Turns out my PSU is only 15A output:/ Can I safely upgrade to a  PSU with more amps? And will a computer PSU work?

]]> https://www.soliforum.com/user/9974/ 2016-04-15T20:29:27Z https://www.soliforum.com/post/121136/#p121136 <![CDATA[Re: Insufficient power with cheap prusa i3]]> After poking around I found the power supply is 120v/220v. There's a small switch for 120 or 220 and it was set at 220:P

I'm pretty sure this a common problem with this
model of printer and now I know why.

So thanks it's heating better than ever:)

]]> https://www.soliforum.com/user/9974/ 2016-04-14T18:57:51Z https://www.soliforum.com/post/121108/#p121108 <![CDATA[Re: Insufficient power with cheap prusa i3]]> What is the output current or wattage? It needs to be 30 amps or 360 watts at minimum.

]]> https://www.soliforum.com/user/7731/ 2016-04-14T18:38:30Z https://www.soliforum.com/post/121107/#p121107 <![CDATA[Re: Insufficient power with cheap prusa i3]]> I'm guessing here but yeah, a power supply would likely be in order. That's usually the first place they scrimp.

]]> https://www.soliforum.com/user/2447/ 2016-04-14T18:26:32Z https://www.soliforum.com/post/121105/#p121105 <![CDATA[Insufficient power with cheap prusa i3]]> After my Solidoodle Press clunked out I decided to get a cheap prusa i3 of eBay to hold me off. It's a M505 Omni Anet A 8.

At first it felt like a great buy for $157, easy to set up, and prints great(or at least better than the press).

But as soon as I turn on the cooling fan the extruder temp drops, and it doesn't have enough power to get back up. I've tried different fan shrouds with little improvement. Is it a power supply problem?

It's a 12v printer and any help would be appreciated.

]]> https://www.soliforum.com/user/9974/ 2016-04-14T18:19:37Z https://www.soliforum.com/post/121104/#p121104