Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 10 of 10

Thread: 10/2 or 10/3

  1. Back To Top    #1

    Join Date
    Aug 2013
    Location
    Nashville, TN
    Posts
    30

    10/2 or 10/3

    I am installing a new pump and have to run new wire for it. The pump is a two speed 230v motor.

    According to the diagram I only hook up two wires. One is the black which goes to the switch,and the other is the common, which connects to the common terminal. What do I do with the third wire, knowing that the bare wire connects to ground.

    I read through a lot of the previous topics and remember one topic where it said to just cap the white wire. If this is actually true, can I just run 10/2. If that is correct then how do I wire it to the circuit?

    I will post pics in a bit. I only have internet on my phone so it takes a bit to figure it all out.
    10k AGP 19" sand filter 1hp pump

  2. Back To Top    #2
    Mod Squad JohnT's Avatar
    Join Date
    Apr 2007
    Location
    SW Indiana
    Posts
    9,089

    Re: 10/2 or 10/3

    The neutral isn't required for 220V motors. When running through conduit, it's much easier to pull individual strands than cable.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

  3. Back To Top    #3

    Join Date
    May 2009
    Location
    Youngsville NC
    Posts
    395

    Re: 10/2 or 10/3

    It really depends on where you are putting your speed control. If your speed control is out by the pump, then all you need is the 10/2 out to your switchgear (and 10/3 fom the switch to the motor). If your switch is a long distance from the motor - then you need the 10/3.

    Bottomline - you need the 10/3 from your speed selection switch to your motor.

    If you are getting one of those motors that have the builtin timer / speed switch - then you can probably get by with just the 10/2 .

    When using the 10/3 from the switch to the pump, it should be wired this way -
    1 red wire - high speed
    1 black wire - low speed (these two can be switched with no lose of functionality)
    1 white wire - common
    1 green wire - ground.
    16x32 IG 19,000 gallons, Pentair 1.5 hp Energy Efficient Superflo pump (348024),vinyl liner, Chlorine dispenser, Hayward S-244T sand filter

  4. Back To Top    #4
    techguy's Avatar
    Join Date
    Jul 2010
    Location
    Antelope, CA
    Posts
    2,687

    Re: 10/2 or 10/3

    If you a pulling you wire in a conduit, I think code requires the conductors be separate. The 10/2 and 10/3 are designed for inside a building. That's my understanding.
    -- Guy --
    10K gallons in 21' Round 52 inch wall Aqualeader AG, Hayward Power Flow LX 1.5 HP pump motor, Hayward Perflex EC50AC DE filter w/Cellulose, Wide mouth skimmer, 2013 new Diver Dan (craigslist) to replace the faded old Hayward AquaBug. TF-100

  5. Back To Top    #5

    Join Date
    Aug 2013
    Location
    Nashville, TN
    Posts
    30

    Re: 10/2 or 10/3





    10k AGP 19" sand filter 1hp pump

  6. Back To Top    #6

    Join Date
    Aug 2013
    Location
    Nashville, TN
    Posts
    30

    Re: 10/2 or 10/3

    So I could use 10/2 and connect
    ground to buss bar
    White to breaker (wrapped in red electrical tape)
    Black to other spot in breaker.


    Then on pump...
    Ground to ground screw
    White (with red tape) to common
    Black to black on switch.
    Yellow and white to hi and low connectors
    10k AGP 19" sand filter 1hp pump

  7. Back To Top    #7
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: 10/2 or 10/3

    You only need 3 wires (line1, line2, ground) run to the motor if you are using that switch.

    The diagram is straightforward. One Line to Terminal 1. The other Line to the black wire on the switch. Then the switch white to terminal 3/4 and the switch yellow to terminal 2. And the ground to the green screw or course. And a bonding wire to the outside terminal.

    EDIT to correct that it is 230V and not 120V.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  8. Back To Top    #8
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
    Posts
    22,347

    Re: 10/2 or 10/3

    You need two hot wires and a ground (and your bonding conductor, of course).

    You hook one hot wire to terminal 1 (common), and the other one to the capped off black wire going to the switch and ground to ground. You also plug the yellow wire from the switch onto terminal #2 (high Speed) and the white wire from the switch to terminal #3or4 (low speed).
    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
    Pool School ----- Pool Math ----- TF-Test Kit

  9. Back To Top    #9

    Join Date
    Aug 2013
    Location
    Nashville, TN
    Posts
    30

    Re: 10/2 or 10/3

    Thank you everyone for your help and support!!
    10k AGP 19" sand filter 1hp pump

  10. Back To Top    #10
    Isaac-1's Avatar
    Join Date
    May 2010
    Location
    SW Louisiana
    Posts
    6,711

    Re: 10/2 or 10/3

    If you are worried about code compliance, it is against the NEC code to change the color of wires with tape if they are smaller (higher number) than about 4 or 6 AWG (I forget which, might even be bigger than that). Basically this means the only wires that it is code legal to change color using marking tape are those larger sizes that are typically only available in black. Also as has already been mentioned it is a code violation to run UF or NM (romex) inside a conduit, you can typically only code legally run individual wires inside conduit (there are a few rare exceptions here).
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
    I use and endorse TFtestKits TF-100 from http://tftestkits.net
    ~Remember TFP counts on your donations to keep this site ad free~

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •