Bitcoin Forum
December 03, 2016, 06:57:41 AM *
News: Latest stable version of Bitcoin Core: 0.13.1  [Torrent].
 
   Home   Help Search Donate Login Register  
Pages: [1]
  Print  
Author Topic: safe to share PSUs between PCs?  (Read 1172 times)
satonit
Newbie
*
Offline Offline

Activity: 5


View Profile
May 25, 2011, 02:04:01 PM
 #1

i hav 2 PCs each with a pci-e ATI card in each. both motherboards can take a seconds pci-e card.

1 PC has a big Vantec 500w supply.. the other only has 200w supply.

can i run 12v rail from the 500w PSU to the other computer/?? is that safe?
1480748261
Hero Member
*
Offline Offline

Posts: 1480748261

View Profile Personal Message (Offline)

Ignore
1480748261
Reply with quote  #2

1480748261
Report to moderator
1480748261
Hero Member
*
Offline Offline

Posts: 1480748261

View Profile Personal Message (Offline)

Ignore
1480748261
Reply with quote  #2

1480748261
Report to moderator
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
1480748261
Hero Member
*
Offline Offline

Posts: 1480748261

View Profile Personal Message (Offline)

Ignore
1480748261
Reply with quote  #2

1480748261
Report to moderator
1480748261
Hero Member
*
Offline Offline

Posts: 1480748261

View Profile Personal Message (Offline)

Ignore
1480748261
Reply with quote  #2

1480748261
Report to moderator
1480748261
Hero Member
*
Offline Offline

Posts: 1480748261

View Profile Personal Message (Offline)

Ignore
1480748261
Reply with quote  #2

1480748261
Report to moderator
keybaud
Member
**
Offline Offline

Activity: 112


View Profile
May 25, 2011, 02:20:11 PM
 #2

i hav 2 PCs each with a pci-e ATI card in each. both motherboards can take a seconds pci-e card.

1 PC has a big Vantec 500w supply.. the other only has 200w supply.

can i run 12v rail from the 500w PSU to the other computer/?? is that safe?

As long as they are powered from the same phase electric supply, then yes. You are very unlikely to use different phases on a standard domestic supply to sockets.
Inaba
Legendary
*
Offline Offline

Activity: 1260



View Profile WWW
May 25, 2011, 03:32:27 PM
 #3

No, it's not safe.  Your ground potential will be different between the two machines and you will likely eventually burn one or the other out in some fashion.

If you're searching these lines for a point, you've probably missed it.  There was never anything there in the first place.
keybaud
Member
**
Offline Offline

Activity: 112


View Profile
May 25, 2011, 05:19:04 PM
 #4

No, it's not safe.  Your ground potential will be different between the two machines and you will likely eventually burn one or the other out in some fashion.

Same AC source, same earth, if they're both from the same phase supply. This is no different to having a server with 2 PSUs, which they do.
pwnyboy
Full Member
***
Offline Offline

Activity: 125


View Profile
May 25, 2011, 05:44:00 PM
 #5

No, it's not safe.  Your ground potential will be different between the two machines and you will likely eventually burn one or the other out in some fashion.

If that's _really_ a concern, common the two PSUs up by strapping their chassis together to put them at the same ground potential.  But I think you're off-base.  The OP could alleviate this concern by ensuring the use of properly grounded outlets, and that both PSUs are plugged into a common source (i.e. the same power strip).
kjj
Legendary
*
Offline Offline

Activity: 1302



View Profile
May 25, 2011, 05:52:26 PM
 #6

I wouldn't consider it "safe" enough to tell a stranger on the internet to do it, but I've done much worse things with electricity and both me and my house are still here.

If you do it, you should run a decent sized copper wire between the two supplies.  Personally, I'd use 14 or 16 gauge wire with properly crimped ring lugs on one of the power supply mounting screws on each case.

A ground loop is very unlikely, but why take chances?

p2pcoin: a USB/CD/PXE p2pool miner - 1N8ZXx2cuMzqBYSK72X4DAy1UdDbZQNPLf - todo
I routinely ignore posters with paid advertising in their sigs.  You should too.
SgtSpike
Legendary
*
Offline Offline

Activity: 1344



View Profile
May 25, 2011, 05:54:27 PM
 #7

No, it's not safe.  Your ground potential will be different between the two machines and you will likely eventually burn one or the other out in some fashion.

Same AC source, same earth, if they're both from the same phase supply. This is no different to having a server with 2 PSUs, which they do.
BUT, you have to be certain that the home is properly grounded and wired.  If it's not, you could definitely have different potential between two plugs.  I've seen some funny stuff on older home wiring... like, ground wires that don't actually ground to anything.

Though I suppose if both PSUs are connected to the same outlet, you're probably fine.
Pages: [1]
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!