No announcement yet.

Main breaker tripping


Adsense Classic 1



  • Filter
  • Time
  • Show
Clear All
new posts

  • Main breaker tripping

    I came in this morning to a note that said #20 is tripping the breaker. This is the MAIN breaker on the wall, not the powerbox breaker. I unpluged the motor, and it still trips. Would the motor start relay being bad cause this? Or where else should I look? Btw, I have Jap A-2's. I look forward to the help, as me and electrical issues are not close friends...

  • #2
    First try unplugging the electrical box and see if it trips.

    This will tell you if the problem is in the power cord or something in the electrical box.
    Go with what works and not what the book says.


    • #3
      drhookmec, My powerboxes are hardwired, no plug(don't ask me wy, seems damn stupid to me). The breaker won't trip until I try and turn the machine on.


      • #4
        Well, you could remove the electrical box cover and then try and turn it on and see whats a sparkin !!!

        And since you mentioned Jap A-2's that are hardwired, the Jap plugs were a shi**y plug to begin with so someone probably did the easy thing, remove them and hard wire them instead of replacing the plug and receptical.

        I will say if it trips the breaker on the wall as soon as you turn it on, maybe something has come loose in the box and is touching some metal (the cover maybe??)

        Marty - Pro Bowl West
        56 Jap A-2's Qubica VDB's
        2 Kustodian Walkers


        • #5
          I've looked for loose wires, and all look fine. If I just push the motor start relay(right in front, 4 little windows that pull in?), it runs for about a second, and I can hear the buzzing in the line down by the main breaker. *Note- I know this is not the prescribed way to troubleshoot


          • #6
            unplug deck light ,they can be the source off lots of problems


            • #7
              If all wiring looks good I'd suspect possible a faulty breaker on the wall.

              Or maybe the receptacle for the motor is bad/shorted.
              Go with what works and not what the book says.


              • #8
                Good call, gilesbowl. I unplugged the light, and no trip. No to find the problem with the light. Thank you.


                • #9
                  I re-wired all my deck lights so that I have the extra length to move the plug to the lane next door to trouble shoot issues like this... Huge time saver in the elimination process...


                  • #10
                    The deck lights here are double for blacklight, which we don't use. The line that would normally go to the switch was going nowhere(there IS no switch), except to the pit on lane 21 where it shorted out and connected itself to the pit cushion. I clipped the line, isolated the wires, and secured it until such a time as I can just remove it. Thanks to all for your input.


                    • #11
                      Hard wiring is required in California and maybe Nevada is too. A bad ballast can cause the 1 amp fuse to blow, don't know about the breaker.
                      I'm going fishing and camping!


                      • #12
                        Here's one that happened to me. The main breaker on breaker box on wall would kick once in awhile. Replaced main breaker and strips 3 times. Still kept kickin main breaker for all machines. Went on for year or so. Then one day, came into center and had a machine kick breaker on pinsetter machine. Found out the 220 volt power cord for acc was rubbing on frame. Replaced power cord and no problems after that. Then some electrion was saying the piece on top were the 3 lugs come in was bad. I believe the short was over heating that part and thats why it was like that. So check your power cords.


                        • #13
                          Originally posted by PJ View Post
                          Hard wiring is required in California and maybe Nevada is too.
                          Hard wiring is required in California, Nevada, and several other states.


                          • #14
                            Really?? Then what would be the LOTO precedure if you cant unplug the machine? (Hey, not that I use LOTO, I am just wondering out loud to myself.) And as far as doing the hard wiring, just a junction box or is it a straight cord from the ceiling right into the machines electrical box cause I would like to get rid of these jap plugs in here someday.

                            Marty - Pro Bowl West
                            56 Jap A-2's Qubica VDB's
                            2 Kustodian Walkers


                            • #15

                              Mine have a line that goes from a junction box above the machine, straight into the electrical box on the machine. Where the 3 pronged reciever on the box normally is, is now a hole for the line to come in, and the wired straight into the breaker. The line is the aluminum coil romex(?) with my wires inside. If I had a smartphone, I would post a picture. I'll see what I can do about that. As far as the LOTO, if I have to do anything on the powerbox, I just shut of the breaker on the wall.


                              Topic Starter RibbonScript


                              Adsense Classic 2

                              widgetinstance 666 (Related Topics) skipped due to lack of content & hide_module_if_empty option.

                              MP Chassis Tester

                              Good morning,
                              I have built a tester for the MP Chassis for the 82-70 machines. Instead of using the cam switches
                              I am using relays. My question is to anyone that may...

                              Preventative Maintenance - As, Jets, A2s - LEDs

                              Those of you looking for new LED lighting ideas may want to check out this site. Lots of stuff.


                              4:1 Timing off..

                              *sigh* Hello friends..

                              I had a 4:1 go bad and I've never seen or done one before. Trying to search the depths of the forums, YouTube videos, it didn't seem too bad....

                              Adapting the Bluffton end cap & terminal board kit to Franklin BE (and FE) motors.

                              Left a rant about this in the bowling forum…

                              I’ve already repaired a a number of Franklin FE motors using the Bluffton-style end cap and terminal board kit (090-004-582)....

                              Turret clutch rebuild

                              At what thickness do you replace the clutch face.
                              Is there a minimum dimension from the clutch face to the rivet.


                              Solderless relay conversion

                              Is anyone running the solderless relays on the accelerators? How do you like them? What brand? How difficult to convert was it? Would love the feed back as I'm about to switch...