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Thread: Wiring a two speed Pump with a 3 position switch

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    Wiring a two speed Pump with a 3 position switch

    All I am trying to wire a 2 speed Jany stealth pump rated at 1.5 hp. I currently have a 1 speed pump running off an on / off mechanical dail clock. I would like to be able to control the speed with a 3 position wall switch mounted in an oulet box. How would I go about wiring this?


    http://www.zorotools.com/g/Wall%20Switc ... /00009523/

    Thanks
    Cory
    25k gallon inground plaster with hayward pumps, waterfall, beach entry with 2 bubblers, deep-water seating bowl, diving board and attached spa with heater and blower = Heaven on Earth!

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    Mod Squad Bama Rambler's Avatar
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    Re: Wiring a two speed Pump with a 3 position switch

    Assuming you mean the 3-position, center off switch (HBL 1385W). You'll hook the power from the timer to the common terminal and low speed to one side terminal and high speed to the other side terminal.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    Re: Wiring a two speed Pump with a 3 position switch

    Only thing is that switch is rated at 1hp and you have a 1.5 hp motor. The amp rating is 20 which is plenty so I don't know how big a problem that is.

    I just did this with this switch from the same company:http://www.zorotools.com/g/Panel-Mou...ches/00057631/

    ...a 2hp toggle SPDT panel-mount (also 20 amp) G1036253 and then I got an all-weather rubber toggle boot to cover it. I do not like the idea of a Center-off position as you would then have the possibility of the motor appearing to be off while one leg is energized. If my pump is off, I want it OFF--not energized on either leg. That might be code, too, although it wasn't some time back. This switch has no Center-off.

    In any case, you will need one additional conductor from the motor to the switch--I ran another #12ga. THHN inside the existing flexible conduit, and then I put the switch between the timer and the pump, wired as described above.
    Current: 28,000G 18'x36' I/G AnthonySylvan Plaster; Waterway 60 sq.ft. DE Filter; 1.0hp x 1.65 SF Two-Speed (B2982) WhisperFlo; 2004-Present
    Previous: 40,000G 20'x40' I/G Koven unlined WWII salvage 5/8" marine steel; Lomart Stainless Sand Filter; 3/4hp Hayward SuperPump; 1946-2003 (managed by me from about 1964)
    Ancient Taylor K-2000, upgraded with Taylor CH, TA, and FAS-DPD, and TFT CYA tests.

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    Ohm_Boy's Avatar
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    Re: Wiring a two speed Pump with a 3 position switch

    A DPDT Center-Off switch can safely be used to break both conductors. Here's how:
    [attachment=0:21vohlbi]Hi-Low-On-Off_DPDT.jpg[/attachment:21vohlbi]
    Attached Images Attached Images
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    Re: Wiring a two speed Pump with a 3 position switch

    Quote Originally Posted by Ohm_Boy
    A DPDT Center-Off switch can safely be used to break both conductors. Here's how:
    [attachment=0:2sd3mvt6]Hi-Low-On-Off_DPDT.jpg[/attachment:2sd3mvt6]
    Yes, absolutely, but none of the switches the OP linked to are DPDT, hence my concern. The three position switch is a single-pole, double-throw, probably meant for a 115v hi-lo fan motor. The others are 3-way and 4-way lighting switches.
    Current: 28,000G 18'x36' I/G AnthonySylvan Plaster; Waterway 60 sq.ft. DE Filter; 1.0hp x 1.65 SF Two-Speed (B2982) WhisperFlo; 2004-Present
    Previous: 40,000G 20'x40' I/G Koven unlined WWII salvage 5/8" marine steel; Lomart Stainless Sand Filter; 3/4hp Hayward SuperPump; 1946-2003 (managed by me from about 1964)
    Ancient Taylor K-2000, upgraded with Taylor CH, TA, and FAS-DPD, and TFT CYA tests.

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    Ohm_Boy's Avatar
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    Re: Wiring a two speed Pump with a 3 position switch

    I've posted these before...

    here are some search links for 20 amp DPDT center-off toggle switches from Grainger, Digikey, and Mouser. And for those in Orlando, Skycraft.

    Grainger search DPDT ON-OFF-ON Motor-rated, 20A
    http://www.grainger.com/Grainger/wwg/se ... 4293703197

    Digikey search (toggle switches) DPDT ON-OFF-ON 20A
    http://search.digikey.com/us/en/cat/swi ... 0On-Off-On

    Mouser search (toggle switches) DPDT ON-OFF-ON 20A
    http://www.mouser.com/Electromechanical ... 0A&FS=True

    Skycraft Surplus DPDT On-Off-On 20A
    http://www.skycraftsurplus.com/search.a ... Off-On+20A
    [center:1kpalu48]Helpful Links: Pool School | CYA/Chlorine Chart | Pool Calculator[/center:1kpalu48]

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