Large Power Supply Question I am in the process of designing a printer and I am needing a large heatbed. I was able to find an 18"x18" heatbed that is 12V but draws 44 amps. So with that and the board I am using, Duet Wifi, which draws 5 amps I am wanting to use a 60 amp PSU to have a buffer. Will the PSU that I have linked work as a supply? I am not sure exactly how all this works because I new to it but did some research, I am just wanting to make sure that what I am planning will work out. Thanks. Link to the PSU: PSU LINK https://reprap.org/forum/read.php?4,819883,819883#msg-819883 Sat, 17 Oct 2026 02:37:04 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?4,819883,820360#msg-820360 Re: Large Power Supply Question https://reprap.org/forum/read.php?4,819883,820360#msg-820360 cwaa Reprappers Fri, 27 Apr 2018 09:27:53 -0400 https://reprap.org/forum/read.php?4,819883,820274#msg-820274 Re: Large Power Supply Question https://reprap.org/forum/read.php?4,819883,820274#msg-820274
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cwaa
I like the mains heated bed and currently have a 120 volt heater on my 200 mm x 200m Cartesian. I am building a 330mm delta and all I have found so far in that size is 220 volts. 120 volts are not popular except in the US. Any suggestions for a source?

Yes, see my earlier post.]]> dc42 Reprappers Thu, 26 Apr 2018 16:53:19 -0400 https://reprap.org/forum/read.php?4,819883,820267#msg-820267 Re: Large Power Supply Question https://reprap.org/forum/read.php?4,819883,820267#msg-820267 cwaa Reprappers Thu, 26 Apr 2018 15:32:20 -0400 https://reprap.org/forum/read.php?4,819883,819968#msg-819968 Re: Large Power Supply Question https://reprap.org/forum/read.php?4,819883,819968#msg-819968
Dell Poweredge 2800 930W PSU 12V@75.7A ]]> madmike8 Reprappers Tue, 24 Apr 2018 15:18:46 -0400 https://reprap.org/forum/read.php?4,819883,819959#msg-819959 Re: Large Power Supply Question https://reprap.org/forum/read.php?4,819883,819959#msg-819959 duet3d.dozuki.com].

Ask either Keenovo or Shenzen Ali Brother Technology to make you a silicone bed heater to your own size, voltage and power specifications. It doesn't cost much. Keep the heater a little smaller than the build plate, to leave room for fixings around the edge. This one [www.aliexpress.com] may be close to what you want.]]> dc42 Reprappers Tue, 24 Apr 2018 14:26:16 -0400 https://reprap.org/forum/read.php?4,819883,819956#msg-819956 Re: Large Power Supply Question https://reprap.org/forum/read.php?4,819883,819956#msg-819956 Tophster Reprappers Tue, 24 Apr 2018 14:14:22 -0400 https://reprap.org/forum/read.php?4,819883,819886#msg-819886 Re: Large Power Supply Question https://reprap.org/forum/read.php?4,819883,819886#msg-819886
I don't know what you're planning to use for a bed, but as a point of reference, my printer's 300x300x8mm cast aluminum bed has a 750W heater and gets up to ABS print temperature in about 4.5 minutes. That's a bit over 0.5W/cm^2. If you use less power it will take longer to heat up. If you aren't going to print ABS or PC or other high temperature materials, you can use less power. The SSR that is switching power to that heater doesn't even get warm and operates without a heatsink.

I have used Meanwell LRS-200-24 power supplies in 2 printers and they are great. No fan, very reliable, and more than enough power. They are pretty small and cheap, too. $32 shipped, via ebay, from a US source (no waiting for that boat from China!)]]> the_digital_dentist Reprappers Tue, 24 Apr 2018 01:23:31 -0400 https://reprap.org/forum/read.php?4,819883,819883#msg-819883 Large Power Supply Question https://reprap.org/forum/read.php?4,819883,819883#msg-819883
Thanks.

Link to the PSU: PSU LINK]]> Tophster Reprappers Tue, 24 Apr 2018 00:15:11 -0400