0.75Hz

Discussion in 'Question of the Day' started by dvsDave, Sep 30, 2019.

  1. TimMc

    TimMc Well-Known Member

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  2. RonHebbard

    RonHebbard Well-Known Member Premium Member

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  3. JD

    JD Well-Known Member

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    Currently singing (temporary) in one choir where the loft is embedded in the pipe chest. Although some of the front pipes are decorative, the real pipes are directly behind. A very dreamy stereo experience!
    mpc2.jpg
     
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  4. tjrobb

    tjrobb Well-Known Member

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    I worked for six years in a theatre from 1928 that still had the original organ. A) They are fascinating instruments. B) Actual two-phase power confuses a lot of electricians (used for the blower).
     
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  5. RonHebbard

    RonHebbard Well-Known Member Premium Member

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  6. Jay Ashworth

    Jay Ashworth Well-Known Member

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    Yep, multi-horse.

    I'm told that 40-50HP motors are not at all uncommon on organs with 32' and 64' stops.

    Such motors require a 480V 3ph separate service at at least 30A per leg, per motor, if not 50A.
     
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  7. RonHebbard

    RonHebbard Well-Known Member Premium Member

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  8. Jay Ashworth

    Jay Ashworth Well-Known Member

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    In the US, 600 commences Medium Voltage (well, unless you're a Utility guy, in which case, MV is 4KV to probably 14KV), and requires much more expensive electricians.
     
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  9. RonHebbard

    RonHebbard Well-Known Member Premium Member

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  10. tjrobb

    tjrobb Well-Known Member

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    The newest NEC bumped low-voltage to 1000V, largely to incorporate solar systems.
    Utilities often go MV thru 34.5kV, as there are several large industries that use it (I know of four plants in our city, maybe more, all are in food production FWIW).
     
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  11. Jay Ashworth

    Jay Ashworth Well-Known Member

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    Yeah, the only place around here I see any delivery higher than 14kV is things like mills and stuff; everything else is transmission and sub-T voltages.
     
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  12. JonCarter

    JonCarter Well-Known Member

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