Windows 10: Power supply running power when I shut down? Solved

Page 2 of 2 FirstFirst 12
  1.    20 May 2018 #11

    Plankton said: View Post
    As a former fire fighter......simply turning off at the mains is not factually correct.....They must be unplugged at the source....and only then will a surge/power spike/lightning strike wont be the cause of a fire....at those particular devices.
    I thought the dual pole switch in a UK mains socket would effectively isolate the appliance even from a surge / spike? i can see a lightening strike might generate sufficient voltage for a spark to jump the switch gap and blow the appliance.
      My ComputersSystem Spec

  2.    20 May 2018 #12

    PolarNettles said: View Post
    The OP is referring to the mechanical switch on the back of some ATX PSUs, which does cut off mains power. Turning off the switch still leaves the PSU grounded so it's more convenient than unplugging if you're working inside the case.

    The specific fire risk of leaving your PSU turned on all the time is about the same as leaving your alarm clock, microwave, or TV plugged in all the time. While I agree that it's non-zero, that's a risk I am willing to take in the name of convenience. If you live somewhere with poor wiring or frequent surges then there are probably better things to do than individually turning off appliances.
    I've seen a few posts about cheap Chinese PSUs going up in smoke. Take the risk if you dare.
      My ComputersSystem Spec

  3.    20 May 2018 #13

    Steve C said: View Post
    I thought the dual pole switch in a UK mains socket would effectively isolate the appliance even from a surge / spike? i can see a lightening strike might generate sufficient voltage for a spark to jump the switch gap and blow the appliance.
    I learned a long time ago from my electrical engineering instructor......if it's still connected it can still be a source. No matter how remotely the possibility is....the possibility is still there. The connection has to be severed to be eliminated as a probable cause.

    So in theory....just flipping the switch at the house main (electrical panel box) it's still connected, you still have the actual physical connection to the house. So you have to disconnect the physical connection to the house for the entire house to be considered safe.

    With modern technologies (example-whole house surge protectors) we can pretty much quit worrying about that stuff.
      My ComputerSystem Spec


  4. Posts : 53
    Windows 10 Pro x64
       20 May 2018 #14

    Steve C said: View Post
    I thought the dual pole switch in a UK mains socket would effectively isolate the appliance even from a surge / spike? i can see a lightening strike might generate sufficient voltage for a spark to jump the switch gap and blow the appliance.
    I think it depends on humidity, but I seem to remember from my Physics class at school, that the breakdown voltage of air is around 10KV/cm.
      My ComputerSystem Spec


 
Page 2 of 2 FirstFirst 12

Related Threads
power supply and cpu speed in General Support
My main computer, a desktop built by a local shop originally came with windows 7, I did free upgrade to 10. I have been thinking of getting an all in one since they appear to be more reliable now than years ago. My questions right now are 2. I...
Help with power supply not working in PC Custom Builds and Overclocking
I'm pretty sure I have got all the cords on my power supply plugged in correctly, I have looked up multiple tutorials and even got a friend to look at it but it still won't turn on.
Power Supply Blew in Drivers and Hardware
Yesterday a resounding SNAP sound blasted out of the desktop and all response instantly died. The monitor still had powe rbut no video image. Immediately to the repair shop for a new power supply but that did not produce a video response and an...
Yesterday in my house,electric fuse was switched to turn on cooker in my kitchen. During this power delivery was stopped for 4-5 second only. When power back on then pc automatically turns on and just before bios show me :"“Power supply surges...
Power supply problem in Drivers and Hardware
Hi, I recently got a new PSU as my other one blew up. However I seem to be having problems with my new one, where my PC will turn on, Windows will be laggy for about 5 minutes and then computer just shuts itself off. I turn the PC back on,...

Tags for this Thread

Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd
All times are GMT -5. The time now is 11:49.
Find Us