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    Duet 3 keeps blowing the breakers in my house when powered on!!!

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    • A Former User?
      A Former User
      last edited by

      Some of the breakers are labeled as GFI which is short for ground fault interrupter, which breaker is tripping?

      Odds are there is a (mains) wiring fault somewhere, so be careful till you find it.

      1 Reply Last reply Reply Quote 1
      • eddygaraundefined
        eddygara
        last edited by eddygara

        It's the same breaker my other printers are on. Again can't fail to mention that all of my printers are wired exactly the same. Same PSU's, same power cables, same wiring config, the only difference is the V3 board, being introduced into the mix. And they have never had an issue where they trip the breakers and cut power to my room.

        Is it code related? I failed to mention that this board is brand spankin new, and I'm stuck on the wiring portion of this build, which is the thing holding me back as my breakers keep getting tripped.

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        • fcwiltundefined
          fcwilt
          last edited by

          Disconnect everything from the power supply except for AC in and GND.

          Does it still blow?

          Connect the power supply to the Duet and remove all other connections from the Duet.

          Does it still blow?

          Frederick

          Printers: a E3D MS/TC setup and a RatRig Hybrid. Using Duet 3 hardware running 3.4.6

          eddygaraundefined 1 Reply Last reply Reply Quote 0
          • eddygaraundefined
            eddygara @fcwilt
            last edited by

            @fcwilt

            Just tired that. Crazy thing still blew. I then tried to route the power directly from the outlet to the printer bypassing the on off switch. My power socket sparked! Scary shit man!

            One thing I noticed the prong for the cable labeled N on the power socket for the printer is charred, as well as the N female socket for the power cable that receives power from the wall outlet. So must be something from that? I don’t see how as the cables are perfectly safe and wired correctly, again the same as my other printer, that don’t have this problem.

            Pics of the fired power cable and outlet

            https://imgur.com/gallery/SFfP6Bc

            Phaedruxundefined 1 Reply Last reply Reply Quote 0
            • Phaedruxundefined
              Phaedrux Moderator
              last edited by

              Do you have the two black wires for + and - flipped? Probably want to mark which is which.

              Is it a fused IEC outlet you're using?

              Can you try wiring direct to the PSU without the switch?

              Also, be incredibly careful as you're dealing with mains here obviously. If the breaker is tripping there's a short somewhere.

              Are you using a GFI outlet? I'm thinking not otherwise it would be tripping and not the breaker?

              Z-Bot CoreXY Build | Thingiverse Profile

              1 Reply Last reply Reply Quote 1
              • Phaedruxundefined
                Phaedrux Moderator @eddygara
                last edited by

                @eddygara said in Duet 3 keeps blowing the breakers in my house when powered on!!!:

                Pics of the fired power cable and outlet
                https://imgur.com/gallery/SFfP6Bc

                Looks like a bad connection in the socket.

                Z-Bot CoreXY Build | Thingiverse Profile

                eddygaraundefined 2 Replies Last reply Reply Quote 1
                • eddygaraundefined
                  eddygara @Phaedrux
                  last edited by

                  @Phaedrux It was perfectly fine until it was plugged in directly. This happened after I removed all cables to the PSU and connected everything.

                  I figured out the problem thanks for helping me troubleshoot, turns out, one of my connectors to the power socket was bad. You guys rock!

                  1 Reply Last reply Reply Quote 1
                  • eddygaraundefined
                    eddygara @Phaedrux
                    last edited by eddygara

                    @Phaedrux
                    Ok so it’s not fixed,

                    This is getting out of hand. At one point it worked perfectly fine. Once everything back connected to to the board the entire things blows my breakers again.

                    I’ve switched out power connections, cables, removed and re did all my wiring.

                    The board will blow my home breakers ever time it’s powered on.
                    My other printers which again are wired exactly the same, (minus the new board) do not do this at all.

                    A Former User? 1 Reply Last reply Reply Quote 0
                    • Phaedruxundefined
                      Phaedrux Moderator
                      last edited by

                      Can we get some more photos of your current setup? Are you still getting blown sockets?

                      Z-Bot CoreXY Build | Thingiverse Profile

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                      • A Former User?
                        A Former User @eddygara
                        last edited by

                        @eddygara said in Duet 3 keeps blowing the breakers in my house when powered on!!!:

                        The board will blow my home breakers ever time it’s powered on.

                        with the risk of repeating myself - its very unlikely to be the board, but rather the mains wiring.

                        1 Reply Last reply Reply Quote 1
                        • dc42undefined
                          dc42 administrators
                          last edited by dc42

                          What breakers are blowing: current limit breakers, or RCD (aka GFCI) breakers?

                          I had a problem last year that the master RCD breaker in the consumer unit would trip whenever I turned on the laser printer in my office. Suspecting a faulty class Y capacitor (the ones between mains input and ground that help suppress EMI), I replaced the Class Y capacitors in it. A little while later, the problem returned. Eventually I realised that it only occurred when both our new induction hob and several pieces of equipment in my office were turned on.

                          What was happening is that the leakage of the hob plus mains wiring capacitance plus the class Y capacitors in all my office equipment together created enough current between live and neutral to trip the 30mA RCD.

                          I fixed it by relocating the hob/cooker circuit to the non-RCD-protected side of the consumer unit, using a RCBO (combined current breaker and RCD) on that circuit instead of a plain current breaker.

                          I've since read that induction hobs are renowned for tripping RCDs. I guess they have larger class Y filtering capacitors than most other devices, because of the amount of EMI they would otherwise generate.

                          Duet WiFi hardware designer and firmware engineer
                          Please do not ask me for Duet support via PM or email, use the forum
                          http://www.escher3d.com, https://miscsolutions.wordpress.com

                          Phaedruxundefined 1 Reply Last reply Reply Quote 0
                          • Phaedruxundefined
                            Phaedrux Moderator @dc42
                            last edited by

                            @dc42 said in Duet 3 keeps blowing the breakers in my house when powered on!!!:

                            RCD (aka GFCI) breakers?

                            Based on the photos earlier no, they look like standard north america breakers.

                            Z-Bot CoreXY Build | Thingiverse Profile

                            dc42undefined 1 Reply Last reply Reply Quote 0
                            • A Former User?
                              A Former User
                              last edited by

                              Some of them were tagged GFI - does that refer to protected outlets in the circuit?

                              Phaedruxundefined 1 Reply Last reply Reply Quote 0
                              • dc42undefined
                                dc42 administrators @Phaedrux
                                last edited by dc42

                                @Phaedrux said in Duet 3 keeps blowing the breakers in my house when powered on!!!:

                                Based on the photos earlier no, they look like standard north america breakers.

                                Here in the UK you can get RCBOs, which combine a current breaker with a RCD (aka GFCI). Might it be one of those?

                                EDIT: the ones with TEST buttons are RCBOs.

                                Duet WiFi hardware designer and firmware engineer
                                Please do not ask me for Duet support via PM or email, use the forum
                                http://www.escher3d.com, https://miscsolutions.wordpress.com

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                                • whosrdaddyundefined
                                  whosrdaddy
                                  last edited by whosrdaddy

                                  I had an instance with one of my printers where the IEC connector fuse would blow after 10 minutes.
                                  At first I thought that the fuse had died, but after 2 additional fuses died, I replaced the fuse again and
                                  monitored the printer while powered, at that moment I realized that the IEC connector was getting really hot!!! (It was a crappy chinese one, bought via Amazon). After replacing the connector with a better specimen, the problem was solved, for some reason there was a bad connection inside the connector causing sparks and resulting heat.

                                  Long story short, check your IEC connector (and get one with a fuse) 😉

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                                  • A Former User?
                                    A Former User
                                    last edited by

                                    One of the IEC connects were questionable to say the least.

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                                    • dc42undefined
                                      dc42 administrators @eddygara
                                      last edited by

                                      @eddygara said in Duet 3 keeps blowing the breakers in my house when powered on!!!:

                                      @bearer just removed the bed wiring all together, so no power is being drawn in from the bed. Breakers still blew. Again not sure what my issue could be?? So strange that this thing could be drawing that much power!

                                      Here’s a pic of my breaker terminal if that help!

                                      https://i.imgur.com/LV4RTOI.jpg

                                      Which of those breakers trips?

                                      Duet WiFi hardware designer and firmware engineer
                                      Please do not ask me for Duet support via PM or email, use the forum
                                      http://www.escher3d.com, https://miscsolutions.wordpress.com

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                                      • Phaedruxundefined
                                        Phaedrux Moderator @A Former User
                                        last edited by Phaedrux

                                        @bearer said in Duet 3 keeps blowing the breakers in my house when powered on!!!:

                                        Some of them were tagged GFI - does that refer to protected outlets in the circuit?

                                        Yes. In North America any ground fault protection is typically present in the socket at the point of use rather than at the breaker.

                                        Z-Bot CoreXY Build | Thingiverse Profile

                                        dc42undefined 1 Reply Last reply Reply Quote 0
                                        • dc42undefined
                                          dc42 administrators @Phaedrux
                                          last edited by

                                          @Phaedrux said in Duet 3 keeps blowing the breakers in my house when powered on!!!:

                                          @bearer said in Duet 3 keeps blowing the breakers in my house when powered on!!!:

                                          Some of them were tagged GFI - does that refer to protected outlets in the circuit?

                                          Yes. In North America any ground fault protection is present in the socket at the point of use rather than at the breaker.

                                          Some of the breakers illustrated have TEST buttons. Those look like RCBOs (combined current breaker and GFCI) to me.

                                          Duet WiFi hardware designer and firmware engineer
                                          Please do not ask me for Duet support via PM or email, use the forum
                                          http://www.escher3d.com, https://miscsolutions.wordpress.com

                                          Phaedruxundefined 1 Reply Last reply Reply Quote 0
                                          • Phaedruxundefined
                                            Phaedrux Moderator @dc42
                                            last edited by

                                            @dc42 That could be.

                                            Z-Bot CoreXY Build | Thingiverse Profile

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