Electrical fire 101

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  • Junk Parts
    Court Jester
    • Jun 2006
    • 8953
    • USA

    #1

    Electrical fire 101

    Don't know why but the suge protector on the wife PC gave up this morning. The only thing on it that was turned on was a little portable DVD player. It still works fine. It was impressive! First there was lots of white smoke then black smoke. Then there was one loud bang and it was all done with. The board as well as all the componets are burnt black. There is a hole burnt in the center of the board that is the size of a dime. Two disc compasitors as well as a diode were blown clear off the board. I wonder if the PSU in her PC is dead now. It could have taken out her monitor to. Going to have to plug up her junk to and extention cord and find out. The power strip was made in CHINA!
    "It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so."
    Mark Twain

    "I wish to have no connection with any ship that does not sail fast; for I intend to go in harm's way."
    John Paul Jones

    There is a fifth dimension, beyond that which is known to man. It is a dimension as vast as space and as timeless as infinity. It is the middle ground between light and shadow, between science and superstition, and it lies between the pit of man's fears and the summit of his knowledge. This is the dimension of imagination. It is an area which we call the Twilight Zone.
    Rod Serling
  • kc8adu
    Super Moderator
    • Nov 2003
    • 8832
    • U.S.A!

    #2
    Re: Electrical fire 101

    generator overrev on you?
    this is why i wont use surge strips in plastic cases!wounded mov's can go white hot and not pull enough to trip the breaker.

    Comment

    • Per Hansson
      Super Moderator
      • Jul 2005
      • 5895
      • Sweden

      #3
      Re: Electrical fire 101

      Originally posted by kc8adu
      gthis is why i wont use surge strips in plastic cases!wounded mov's can go white hot and not pull enough to trip the breaker.
      This is good to know
      Where can fire proof versions be bought?
      Or you just use a UPS instead?
      "The one who says it cannot be done should never interrupt the one who is doing it."

      Comment

      • stj
        Great Sage 齊天大聖
        • Dec 2009
        • 30999
        • Albion

        #4
        Re: Electrical fire 101

        nothing to do with china,
        mov's do fail - i'v had them go on the bench - bang-flash!

        put simply, they kill spikes by shorting out for a microsecond or whatever - like an AC version of a zener diode.

        each spike stresses them - eventually they just go boom.

        Comment

        • stj
          Great Sage 齊天大聖
          • Dec 2009
          • 30999
          • Albion

          #5
          Re: Electrical fire 101

          btw, if you put a couple of layers of thick heatshrink over them they generally dont damage anything other than the pcb around the pins when they blow.

          this used to be common practice in pc psu's

          Comment

          • RJARRRPCGP
            Badcaps Legend
            • Jul 2004
            • 6304
            • USA

            #6
            Re: Electrical fire 101

            Originally posted by Junk Parts
            Don't know why but the suge protector on the wife PC gave up this morning. The only thing on it that was turned on was a little portable DVD player. It still works fine. It was impressive! First there was lots of white smoke then black smoke. Then there was one loud bang and it was all done with. The board as well as all the componets are burnt black. There is a hole burnt in the center of the board that is the size of a dime. Two disc compasitors as well as a diode were blown clear off the board. I wonder if the PSU in her PC is dead now. It could have taken out her monitor to. Going to have to plug up her junk to and extention cord and find out. The power strip was made in CHINA!
            My living room powerstrip was real close to doing the same thing!

            Because I had a leak on July 10, 2010. Water was dripping right near the powerstrip and cable box!
            ASRock B550 PG Velocita

            Ryzen 9 "Vermeer" 5900X

            32 GB G.Skill RipJaws V F4-3200C16D-32GVR

            Arc A770 16 GB

            eVGA Supernova G3 750W

            Western Digital Black SN850 1TB NVMe SSD

            Alienware AW3423DWF OLED




            "¡Me encanta "Me Encanta o Enlistarlo con Hilary Farr!" -Mí mismo

            "There's nothing more unattractive than a chick smoking a cigarette" -Topcat

            "Today's lesson in pissivity comes in the form of a ziplock baggie full of GPU extension brackets & hardware that for the last ~3 years have been on my bench, always in my way, getting moved around constantly....and yesterday I found myself in need of them....and the bastards are now nowhere to be found! Motherfracker!!" -Topcat

            "did I see a chair fly? I think I did! Time for popcorn!" -ratdude747

            Comment

            • Junk Parts
              Court Jester
              • Jun 2006
              • 8953
              • USA

              #7
              Re: Electrical fire 101

              Since I started this post I've blown up another surge protector. This one was even more dramatic than the first. The whole plastic case melted. You can see the outline of it in the carpet. The carpet all around where it was is now chared black. All you have to do to take one of these thing out is rev the generator some and Kablam its gone. Junk Parts can learn new things like "DON'T REV THE GENERATOR if given enough time.
              "It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so."
              Mark Twain

              "I wish to have no connection with any ship that does not sail fast; for I intend to go in harm's way."
              John Paul Jones

              There is a fifth dimension, beyond that which is known to man. It is a dimension as vast as space and as timeless as infinity. It is the middle ground between light and shadow, between science and superstition, and it lies between the pit of man's fears and the summit of his knowledge. This is the dimension of imagination. It is an area which we call the Twilight Zone.
              Rod Serling

              Comment

              • RJARRRPCGP
                Badcaps Legend
                • Jul 2004
                • 6304
                • USA

                #8
                Re: Electrical fire 101

                Originally posted by Junk Parts
                Since I started this post I've blown up another surge protector. This one was even more dramatic than the first. The whole plastic case melted. You can see the outline of it in the carpet. The carpet all around where it was is now chared black. All you have to do to take one of these thing out is rev the generator some and Kablam its gone. Junk Parts can learn new things like "DON'T REV THE GENERATOR if given enough time.
                Huh? Then would that mean your TV and PC are F-ed now?
                ASRock B550 PG Velocita

                Ryzen 9 "Vermeer" 5900X

                32 GB G.Skill RipJaws V F4-3200C16D-32GVR

                Arc A770 16 GB

                eVGA Supernova G3 750W

                Western Digital Black SN850 1TB NVMe SSD

                Alienware AW3423DWF OLED




                "¡Me encanta "Me Encanta o Enlistarlo con Hilary Farr!" -Mí mismo

                "There's nothing more unattractive than a chick smoking a cigarette" -Topcat

                "Today's lesson in pissivity comes in the form of a ziplock baggie full of GPU extension brackets & hardware that for the last ~3 years have been on my bench, always in my way, getting moved around constantly....and yesterday I found myself in need of them....and the bastards are now nowhere to be found! Motherfracker!!" -Topcat

                "did I see a chair fly? I think I did! Time for popcorn!" -ratdude747

                Comment

                • Junk Parts
                  Court Jester
                  • Jun 2006
                  • 8953
                  • USA

                  #9
                  Re: Electrical fire 101

                  Everything is fine. Its the Laptop that gave up and it wasn't plugged in at the time.
                  "It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so."
                  Mark Twain

                  "I wish to have no connection with any ship that does not sail fast; for I intend to go in harm's way."
                  John Paul Jones

                  There is a fifth dimension, beyond that which is known to man. It is a dimension as vast as space and as timeless as infinity. It is the middle ground between light and shadow, between science and superstition, and it lies between the pit of man's fears and the summit of his knowledge. This is the dimension of imagination. It is an area which we call the Twilight Zone.
                  Rod Serling

                  Comment

                  • severach
                    Badcaps Legend
                    • Aug 2007
                    • 1055
                    • USA

                    #10
                    Re: Electrical fire 101

                    So what will your next surge strip do? Blacken the entire house? Are you're going to let it?

                    Fireproof surge strips are available at every store and are cheaper than the fire hazard type. I only purchase non surge strips and I opened all the strips I had already and cut or disabled the surge parts. Strips where the surge parts could not be disabled were discarded. Surge suppression at the strip is unsafe and useless.

                    My surge suppression is in the breaker box where it beats down lightning with the greatest of ease. All other unimportant surges are handled by the power supplies which don't need any help from carpet burners.

                    Generators are voltage regulated. Reving it would increase the frequency but shouldn't increase the voltage. I burned out some surge strips with a generator because the neutral damaged allowing more than 120v on some circuits and less than 120v on others.

                    I've seen blackened PSU where the MOVs that didn't go were heat shrink wrapped. The wrap isn't good for much.
                    sig files are for morons

                    Comment

                    • ratdude747
                      Black Sheep
                      • Nov 2008
                      • 17136
                      • USA

                      #11
                      Re: Electrical fire 101

                      it blew because he was horsing the throttle... as long as he leaves it alone, it will be fine... it is an old generator so it might not have been regulated... the frequency change might have been too much for the strip anyway...
                      sigpic

                      (Insert witty quote here)

                      Comment

                      • stj
                        Great Sage 齊天大聖
                        • Dec 2009
                        • 30999
                        • Albion

                        #12
                        Re: Electrical fire 101

                        mov's arent frequency specific.

                        luckily they are only about 50c each - you can parallel a big line of them in a metal case if you wanted.

                        Comment

                        • Junk Parts
                          Court Jester
                          • Jun 2006
                          • 8953
                          • USA

                          #13
                          Re: Electrical fire 101

                          I was Reving the gen-set to clear the carb. This was the original busted junk carb. The unit now has a newer carb off a tecumseh lawn mower on it. The unit starts on the first pull and runs great now.
                          "It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so."
                          Mark Twain

                          "I wish to have no connection with any ship that does not sail fast; for I intend to go in harm's way."
                          John Paul Jones

                          There is a fifth dimension, beyond that which is known to man. It is a dimension as vast as space and as timeless as infinity. It is the middle ground between light and shadow, between science and superstition, and it lies between the pit of man's fears and the summit of his knowledge. This is the dimension of imagination. It is an area which we call the Twilight Zone.
                          Rod Serling

                          Comment

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