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280V motor on 230V circuit

Discussion in 'Electronic Repair' started by Deodiaus, Apr 26, 2008.

  1. Deodiaus

    Deodiaus Guest

    I have a broken pool motor [magnetek y56y] which will cost a bundle to
    fix
    or repair.
    While doing a search on the web, I found the same model (really cheap)
    but
    wired for 280V, instead of the 230 V load that my wiring is supplies.
    Now, I was thinking of buying the cheap 280V model and installing it
    instead. Aside from rotating at a different speed and
    maybe some power inefficiencies, are there any other drawbacks of
    using the 280V model
    instead?
     
  2. Guest

    BUY IT! You'll thank yourself 10 years from now! The speed diffrence
    wil be neglegable, the duty-cycle will be such that the motor will
    enjoy a much longer life... if anything you could step-up RPM by
    adding pulleys and a drive-belt rather than direct-drive coupled as it
    is now... The pulley/belts would also minimize start-shock to the pump
    by softening the inital roll in of the motor...
     
  3. Jamie

    Jamie Guest

    are you sure it isn't 208 ?
     
  4. hr(bob)

    hr(bob) Guest

    I'd be suspicious that the 280V was a misreading somehow of 230V.
     
  5. Jamie

    Jamie Guest

    that sounds more plausible.
     
  6. Or... of 208V. If you have a "three phase" circuit
    coming into a building, and you run two "hot" wires
    to your appliance (or motor), the effective voltage
    you're getting is 208V.

    There's enough overlap so that a standard 240V appliance
    such as, say, a larger air conditioner, will work more
    or less ok on 208V. And vice versa.

    But there is most assuredely a difference in the
    two circuits, so for optimal results, you'll want
    an appliance (or motor) designed for the specific
    wiring in your facility.
     
  7. jakdedert

    jakdedert Guest

    I'm a little confused about a 230 volt circuit. In what part of the
    world does the utility supply 230v?

    jak
     
  8. Don Kelly

    Don Kelly Guest

    ----------------------------
     
  9. John G

    John G Guest

    Most except the USA and Canada and a few others.

    John G.
     
  10. Guest

    | I'm a little confused about a 230 volt circuit. In what part of the
    | world does the utility supply 230v?

    http://en.wikipedia.org/wiki/Mains_power_systems

    There are two different flavors of 220/230/240 volts. Some places have a
    simple system with one wire hot and one wire grounded. Other places have
    a split system where the voltage is split in half to get 110/115/120 volts
    relative to ground, by adding a additional "middle" conductor that is the
    grounded one.
     
  11. James Sweet

    James Sweet Guest


    What's broken on the original motor? There isn't a whole lot to go wrong
    with these, I've yet to run into one I couldn't fix.
     
  12. James Sweet

    James Sweet Guest


    Misreading of 208V undoubtably, 208 is very common in commercial buildings,
    that and 277.
     
  13. Arfa Daily

    Arfa Daily Guest

    In theory, it's 230 on a single phase - neutral circuit here in the UK now,
    but in practice, it's actually nearer the previously accepted 240v for the
    most part ...

    Arfa
     
  14. Baron

    Baron Guest

    UK ! 230/240 V
     
  15. Ulysses

    Ulysses Guest

    Me too. Usually it's just been corrosion that can be cleaned off and/or
    lack or lubrication.
     
  16. You

    You Guest

    Sonny, you need to LEARN the difference between Ground and Neutral......
    before you spout any further BS.......
     
  17. operator jay

    operator jay Guest

    What he wrote looks reasonable to me in terms of ground and neutral.
    Neutral is the grounded conductor where I live. He does not say to
    use a ground as a neutral, if that's what you're getting at. I can
    only guess that that may be what you're getting at, you haven't really
    said.

    [trimmed sci.physics.electromag]

    j
     
  18. Guest

    |
    | |> In article <>,
    |>
    |> wrote:
    |>
    |>> There are two different flavors of 220/230/240 volts. Some places
    |>> have a
    |>> simple system with one wire hot and one wire grounded. Other
    |>> places have
    |>> a split system where the voltage is split in half to get
    |>> 110/115/120 volts
    |>> relative to ground, by adding a additional "middle" conductor that
    |>> is the
    |>> grounded one.
    |>
    |> Sonny, you need to LEARN the difference between Ground and
    |> Neutral......
    |> before you spout any further BS.......
    |
    | What he wrote looks reasonable to me in terms of ground and neutral.
    | Neutral is the grounded conductor where I live. He does not say to
    | use a ground as a neutral, if that's what you're getting at. I can
    | only guess that that may be what you're getting at, you haven't really
    | said.

    He might be one of those "knows just enough to be really dangerous" people
    on the net. I didn't even mention "neutral". My intent was to explain it
    in a simpler way for someone to just understand the basic difference. The
    term "middle" was to convey a little more information than "neutral" would
    have ... for the targeted audience.

    There were two reasons Edison used a split system. One was to get the
    advantage of less voltage drop and/or longer wires. The other was to run
    the light bulbs on a lower voltage, which he knew makes them more reliable.

    If he had not been fixated on DC, and had simply accepted AC early on, he
    might well have discovered that an even lower voltage made the bulbs even
    more reliable, and that a step down transformer at each building would have
    done the job reliably, and also allow him to distribute at a higher voltage.
    For example, he could have distributed at 600 volts and stepped down to 30
    volts inside each building (maybe on a floor by floor basis). OTOH, he could
    have run a DC motor-generator to get a lower voltage, too (though it would
    have been less reliable than a transformer on AC). Had the light bulb voltage
    issue not been a factor, he might well have simply run a straight 2-wire 220
    volt system.
     
  19. Guest

    |
    | |> Jamie wrote:
    |>> hr(bob) wrote:
    |>>
    |>>> On Apr 26, 6:14 pm, Jamie
    |>>>
    |>>>> Deodiaus wrote:
    |>>>>
    |>>>>> I have a broken pool motor [magnetek y56y] which will cost a bundle to
    |>>>>> fix
    |>>>>> or repair.
    |>>>>> While doing a search on the web, I found the same model (really cheap)
    |>>>>> but
    |>>>>> wired for 280V, instead of the 230 V load that my wiring is supplies.
    |>>>>> Now, I was thinking of buying the cheap 280V model and installing it
    |>>>>> instead. Aside from rotating at a different speed and
    |>>>>> maybe some power inefficiencies, are there any other drawbacks of
    |>>>>> using the 280V model
    |>>>>> instead?
    |>>>>
    |>>>> are you sure it isn't 208 ?
    |>>>>
    |>>>> --http://webpages.charter.net/jamie_5"
    |>>>
    |>>>
    |>>> I'd be suspicious that the 280V was a misreading somehow of 230V.
    |>> that sounds more plausible.
    |>>
    |> I'm a little confused about a 230 volt circuit. In what part of the world
    |> does the utility supply 230v?
    |>
    |> jak
    |
    | In theory, it's 230 on a single phase - neutral circuit here in the UK now,
    | but in practice, it's actually nearer the previously accepted 240v for the
    | most part ...

    Is the grounded conductor in a 2-wire 230/240 volt system fed to each home
    referred to as "neutral" even in UK?
     
  20. Guest

    |
    |
    | |> hr(bob) wrote:
    |>
    |>> On Apr 26, 6:14 pm, Jamie
    |>>
    |>>>Deodiaus wrote:
    |>>>
    |>>>>I have a broken pool motor [magnetek y56y] which will cost a bundle to
    |>>>>fix
    |>>>>or repair.
    |>>>>While doing a search on the web, I found the same model (really cheap)
    |>>>>but
    |>>>>wired for 280V, instead of the 230 V load that my wiring is supplies.
    |>>>>Now, I was thinking of buying the cheap 280V model and installing it
    |>>>>instead. Aside from rotating at a different speed and
    |>>>>maybe some power inefficiencies, are there any other drawbacks of
    |>>>>using the 280V model
    |>>>>instead?
    |>>>
    |>>> are you sure it isn't 208 ?
    |>>>
    |>>>--http://webpages.charter.net/jamie_5"
    |>>
    |>>
    |>> I'd be suspicious that the 280V was a misreading somehow of 230V.
    |> that sounds more plausible.
    |>
    |>
    |
    |
    | Misreading of 208V undoubtably, 208 is very common in commercial buildings,
    | that and 277.

    And where you have 277 you almost certainly have 480. But I suppose it is
    possible to have 277 alone (is better to use than 120 for lots of fluorescent
    lighting) or maybe even a 554/277 Edison style single phase split system,
    where three phase distribution is not available and the higher voltage is
    desirable for large areas of commercial lighting.
     
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