Should a metallic PC casing be grounded?

Osama Javaid October 7, 2012

Should a metallic PC casing be grounded in order to protect PC components in case of a short circuit? If yes, HOW?

  1. Abba Jee
    November 29, 2012 at 9:08 am

    i have 2 pins plug, metallic PC casing and for last 2 years or so its placed on ground yet not grounded :D

  2. Gabriel Barron
    October 30, 2012 at 2:32 pm

    What type of desktop do you have that its only a 2 prong outlet? you could use a ground only prong on extension cord to ground your stuff.

  3. dhanunjayarao chunduri
    October 18, 2012 at 7:12 am

    Putting a PC on the ground does not “ground” it.

  4. Vishal Mishra
    October 9, 2012 at 3:43 pm

    you should use a 3 pin plug, or it is dangerous. It can give an electric shock.

  5. Oron Joffe
    October 8, 2012 at 10:48 pm

    1. Grounding will make little difference to your PC, but it is a safety feature which helps to protect you the electrical supply.
    2. The PC's case does not need to be grounded (it's not part of the PC's electronic circuit). However, the PC's power supply has a three pin socket.
    3. If your wall socket only has two pins, you can create a "ground" by connecting an earthing strap (or just thick wire) to a water pipe, and connect the earth-line from the PC to the ground. Muo TechGuy is right in saying that you can't use the "ground" for this since most floors are pretty good insulators, but the water pipes or buried metalwork will conduct electricity and this is indeed how "proper" ground circuits are made.

  6. Seb Arnold
    October 8, 2012 at 8:48 pm

    If you’re using a 3 prong plug then it should already be grounded

  7. Dave Rimmer
    October 8, 2012 at 2:39 pm

    Are you building a System with a metal case, you should not need to worry as others have stated use a good PSU with a three pin plug on it and you should be fine. If you are building your own make sure you use the stand offs under your motherboard.

  8. Rajaa Chowdhury
    October 8, 2012 at 2:36 am

    If the electricity at your place has been properly earthed, and you are using a three pin plug for your computer, I do not think you need any further precaution.

  9. Rajaa Chowdhury
    October 8, 2012 at 2:36 am

    If the electricity at your place has been properly earthed, and you are using a three pin plug for your computer, I do not think you need any further precaution.

  10. Martyn Jones
    October 7, 2012 at 6:29 pm

    You can tell if it's grounded ok. If you can hear a buzzing in your speakers and when you touch the case it stops it's not grounded properly

  11. Jim Chambers
    October 7, 2012 at 5:06 pm

    Case is already grounded. However, I suggest you use a quality surge protecter to plug in your computer equipment and not a "Dollar Store" power bar.

  12. Alex Perkins
    October 7, 2012 at 4:40 pm

    If you're using a 3 prong plug then it should already be grounded.

  13. Keian Kirkegaard
    October 7, 2012 at 4:30 pm

    I agree with the previous posts, but just wanted to add that it may be a good idea to visually verify that the case itself has a solid connection to whatever element you are using for the ground. Some coatings on parts may limit their conductance when mechanically fastened to another element so just make sure to check the potential between the case and ground after the connection is made. As an added measure, some multi-meters have a 'connection' test that will simply beep if the path between the two probes has a 'good' connection. You could verify this also by simply measuring the resistance and ensuring it is low.

  14. Alan Wade
    October 7, 2012 at 2:20 pm

    No, your case dosnt need extra grounding unless otherwise stated when you bought it. Most cases are insulated. The only thing that needs extra grounding is you if you are working on the boards etc, that will remove any static.

  15. Dimal Chandrasiri
    October 7, 2012 at 1:01 pm

    the thing is most of the power supply units contain a 3 pin connector but some use a two pin connector with an optional space for grounding pin. I'm sure your house has a earthing connector. so, if you are using a 2 pin cable, switch to a 3 pin cable and you are good to go.

    Note : after stepping in to a 3 pin cable, test your casing is grounded correctly with a tester.

  16. kb3wzz
    October 7, 2012 at 12:56 pm

    Your PC case is already grounded via the power supply , when plugged into a properly wired outlet.
    When it is not plugged in.
    Then it is subject to ESD discharge and should be properly stored by putting it a dissipative container.

  17. Aniket Singh
    October 7, 2012 at 12:48 pm

    yes, becoz it can conduct electricity and can destroy ur PC

  18. Anonymous
    October 7, 2012 at 12:46 pm

    always use a 3 pin plug man...

  19. Anonymous
    October 7, 2012 at 12:44 pm

    Always use a three pin plug for your PC. As bhavuk said if earthing is proper then no need of any worry

  20. Jasur Karimov
    October 7, 2012 at 9:29 am

    My PC has metallic casing and there is no grounded circuit in my flat. Personally, I do not think there is a need in this.

  21. Bhavuk Jain
    October 7, 2012 at 9:23 am

    If earthing is already done in your house and the power is connected with the 3 pin plug, then no grounding is required. Otherwise, if only a 2 pin plug is used then just put your PC on the ground.

    • Anonymous
      October 7, 2012 at 11:44 am

      No, it's a 2 pin plug, and how to ground if putting the PC on the ground is not an option?

    • Muo TechGuy
      October 7, 2012 at 9:02 pm

      Putting a PC on the ground does not "ground" it.

      • April Eum
        October 8, 2012 at 2:55 am

        LOL. this was a funny statement.

      • Jacob Mathew
        October 8, 2012 at 4:10 am

        Yes that is true.Try to get your house earthed.In that way you won't need to take precautions for every electrical device.

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