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Using Manual Motor Starter with overload protection for printed circuit boards

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    Using Manual Motor Starter with overload protection for printed circuit boards

    Is a code requirement in place where a manual motor starter is required with overload protection (208VAC 1phase Line) where the components plugged into the board consist of DC solenoid valves?
    Unit is a Daikin BPMKS unit to control refrigerant.

    #2
    A motor starter is used for motors.
    If Billy Idol is on your playlist go reevaluate your life.

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      #3
      I concur

      Originally posted by ActionDave View Post
      A motor starter is used for motors.
      A contractor is wiring these units with a HOA sw. and Manual Motor Starter with pilot light and overloads. The automatic side of HOA is jumpered-out, so the HOA sw just turns unit on-off like a disconnect, same as manual motor starter. This is a union contractor in Baltimore.

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        #4
        Sounds like an expensive switch.
        Last edited by ActionDave; 07-22-19, 10:20 AM.
        If Billy Idol is on your playlist go reevaluate your life.

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          #5
          Originally posted by EEC View Post
          A contractor is wiring these units with a HOA sw. and Manual Motor Starter with pilot light and overloads. The automatic side of HOA is jumpered-out, so the HOA sw just turns unit on-off like a disconnect, same as manual motor starter. This is a union contractor in Baltimore.
          Sounds like a waste of materials to me.

          Jumpering the automatic side of HOA turns it into Hand Off Hand. May as well just had On-Off to start with. Is also useless if there is manual motor starter in same vicinity, if they are remote from one another there may be some good reasons to have multiple switches. If the load is a solenoid valve the overload assembly is probably useless and a waste of $$ spent on it.
          I live for today, I'm just a day behind.

          Comment


            #6
            The manual starter can be though of as “supplemental protection” for the solenoid coil. Not required by code and it would not suffice as the Branch Over Current Protective Device since it’s not a motor, so there would still need to be a fuse or CB somewhere to protect the conductors. But if they want to try to protect the solenoid coil at a level lower than the BOCPD for the wires, that’s their prerogative. Personally, I would have used one of those cheap little DIN rail mounted IEC circuit breakers that are listed as UL1077 supplemental protection, that’s the sort of thing those are good for.

            The jumpered out HOA switch is kind of pointless, but maybe that’s all he had available that day. Can’t say I haven’t done it in a pinch.
            __________________________________________________ ____________________________
            Many people are shocked when they discover I am not a good electrician...

            I'm in California, ergo I am still stuck on the 2014 NEC... We'll get around to the 2017 code in around 2021.

            Comment


              #7
              Originally posted by Jraef View Post

              The jumpered out HOA switch is kind of pointless, but maybe that’s all he had available that day. Can’t say I haven’t done it in a pinch.
              Done things like that in a pinch as well or in situations where HOA switch is already there but simple ON/OFF is all that is needed.
              I live for today, I'm just a day behind.

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