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electric motor copper

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  1. #1
    devo started this thread.
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    electric motor copper

    Sorry to be asking noob questions again, and yes I did try a search. I'm looking at bidding on some equipment that contains some very large motors, like over 100 HP.

    Does anyone know a rule of thumb for figuring out lbs of copper per HP? I have a rough idea, but its based on my experience with smaller motors so I'm not sure if it scales.



    Tis


  2. #2
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    I've never messed with those because of the difficulty moving and processing them, but more power to ya.

    They may have more value as complete units if they're any good.

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    Buy it and find out if you make money great if you lose money then use it as a learning experience for next time.

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  5. #4
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    Read on SMF that copper amount would be approx.two thirds of horsepower.Keep us posted.GOOD LUCK

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    Take pictures and share what you find out after, Mike.
    "Profit begins when you buy NOT when you sell." {quote passed down to me from a wise man}

    Now go beat the copper out of something, Miked

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    Tried to find where i had read that in the past posts but could not find it.I do not have any EXPERIENCE with a motor of that size,was just repeating what i have read on SMJ past posts

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    It was in reply to one of my posts that was stated thats about 2/3 of horsepower to copper ratio. I had some llarge 200 - 300 460 motors, I was supposed to buy, but never got a phone call back on them. The dude stated it in one of the reply's. Search my name and yall shall see.!

  9. #8
    devo started this thread.
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    Hmmm I have to wonder if 2/3 is accurate. I did a 1.5 horse the other day and got just over 4 pounds. That gives a factor of 2.667 pounds per HP. I'm sure that won't work of those big monsters, they'll be 3 phase and 600 volts.

  10. #9
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    some yards pay more for larger motors check what the "as is" price, then try and figure the math!


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