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1P Electric Motor - L1 Constant Hot?

  1. Jun 27, 2012 #1
    Hi all,
    I'm in the process of rebuilding a land-based boat house that was leveled in a tornado. This is one of the old styles with the railroad tracks and a tram to hoist the boat in/out of the lake. The tram/winch motor has to be replaced. It is single phase 240V. As best I can tell, the old motor had the L1 circuit wired as constant hot. The forward/reverse operation was done with a 6-connector drum switch and this is how the L2 circuit reaches the motor. We have purchased a new motor and it can be wired 240v or 480v. I've attached an image of the motor schematics and my proposed wiring for the drum switch.

    In summary, it bothers me to wire the P1-L1 circuit as constant hot. I'm not an electrician, so please excuse some of my terminology. This operation is in a somewhat remote environment and access to additional components is challenging, but not impossible.

    Thanks for your advice,
    RobertK
     

    Attached Files:

  2. jcsd
  3. Jun 28, 2012 #2

    jim hardy

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    No help yet?

    I too dislike things that are still "hot" when turned off but it's often done. One more contact on the drum switch would sure be handy.

    I'd probably get a two pole toggle switch and mount it just over the drum switch, maybe with a light to remind you it's on.

    http://www.leviton.com/OA_HTML/ProductDetail.jsp?partnumber=1222-PLR&section=41455&minisite=10251

    probably a twelve dollar switch and ninety cent box for it would give you peace of mind.
    With a double box you could even put in a 220 outlet for the air compressor !
     
    Last edited: Jun 28, 2012
  4. Jun 28, 2012 #3

    Averagesupernova

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    If it makes you feel any better some if not all electric ranges have the oven heating element connected in this way.
     
  5. Jun 28, 2012 #4
    Thanks for the replies! I do like the idea of having an additional circuit on the drum switch. It would likely be the "correct" way to solve the problem.
     
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