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Thread: Electrical supply

  1. Back To Top    #1

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    Electrical supply

    I am having a pool installed and and want to be completely prepared when the assembly is complete. I need to know what electrical supply i need? It is a 18x36 with a 3/4 hp pump, salt water generator, sand filter, gas heater, aux receptical and 2 12v lights. What i want to know is what amp service do i need to run outside. Can i put the GFCI outside or does it have to be in? Should any or all these things be on there own breakers? Can I get away with 8/3 wire from my main panel which is 60ft away? Should i upgrade to a 1 hp pump?
    Any help would be great
    Thanks

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    Join Date
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    Central New York
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    Re: Electrical supply

    Quote Originally Posted by snipley
    I am having a pool installed and and want to be completely prepared when the assembly is complete. I need to know what electrical supply i need? It is a 18x36 with a 3/4 hp pump, salt water generator, sand filter, gas heater, aux receptical and 2 12v lights. What i want to know is what amp service do i need to run outside. Can i put the GFCI outside or does it have to be in? Should any or all these things be on there own breakers? Can I get away with 8/3 wire from my main panel which is 60ft away? Should i upgrade to a 1 hp pump?
    Any help would be great
    Thanks
    Since I am spending your money............18X36 I'm taking as an IG

    8/3 wire would be great. In rocky soil, I would put the wire in plastic pipe or conduit. I would run GFI from my main panel to a 4 breaker aux. box. Then split to 115/230. Remember "waterproof". One or two breaker slots for the pump (115/230). From aux. box to timer to on/off switch to pump. One aux. box breaker to SWG and heater. One aux. box breaker to outside receptical and to a on/off switch that operates a light that shines on the filter (so you can read pressure and backwash) and pump; and to a switch to operate 12v lights.

    First think safety and waterproof. The breakers in the aux. box should be (must be) GFI also.

    You could go 50 amp in the main breaker box and 30 amp to the pump (remember wire size) and 15/20 amp to the SWG/heater and 15/20 amp to the lights; all breakers GFI.
    Hotrod30

    20 X 40 foot vinyl Borates and Salt Pool
    Rolachem Chlorine Feeder
    Hayward 27 inch sand filter with 80 lbs of pea gravel
    Jacuzzi Splash Pak SP55 DE filter in parallel
    Pentair VF3050 pump

  3. Back To Top    #3

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    Mar 2008
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    Los Angeles, Ca
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    Re: Electrical supply

    Since this is a new pool, I would seriously look at a 2 speed, or a variable speed pump. They will cost more initially, but pay for themselves in energy savings.

    There is some info in the pool school about pump sizing, which depends on how big your pool is, in volume.

    Randy
    20,000 gal fiberglass pool, Raypak 266k BTU Lo Nox gas heater, Purex 2048 48 sq ft DE filter, 1.5hp pump. iWave wireless remote, Pulsafeeder chlorine pump, Safety cover on most of the time

    seperate spa, with own pump, cartridge filter, Teledyne heater

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    Re: Electrical supply

    Thanks hotrod.
    Can i run the pump and heater to the timer together, because i don't want the heater on when the pump is off? Can the SWG stay on if the pump is off? If i have a gfci in the house why outside also? That gets very expensive with 220v gfci's. Does the bonding wire need to be in conduit to the pool?
    I'm sure i have forgotten something.
    You guys are great.
    Thanks

  5. Back To Top    #5

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    Re: Electrical supply

    Knew i forgot something, I want to keep most things running on 220v as it is cheaper to run.

  6. Back To Top    #6

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    Re: Electrical supply

    Quote Originally Posted by snipley
    Thanks hotrod.
    Can i run the pump and heater to the timer together, because i don't want the heater on when the pump is off? Can the SWG stay on if the pump is off? If i have a gfci in the house why outside also? That gets very expensive with 220v gfci's. Does the bonding wire need to be in conduit to the pool?
    I'm sure i have forgotten something.
    You guys are great.
    Thanks
    The pump and the heater must be running together. I don't believe you can run a SWG without the pump running.(I don't have a SWG, not sure) Anyone??????? Maybe they just tap 115v off the timer.

    I don't have a heater, so someone else should speak up here. I thought there was a flow switch that wouldn't let the heater go on if there is no flow. The power to the gas heater should only power the sparker and the controls. My opinion, get a GFI for your main breaker box. It protects the underground line and up to and including the aux. box. It's you, your family and friends swimming in that pool. Also, I don't think it would be up to code without one.
    Hotrod30

    20 X 40 foot vinyl Borates and Salt Pool
    Rolachem Chlorine Feeder
    Hayward 27 inch sand filter with 80 lbs of pea gravel
    Jacuzzi Splash Pak SP55 DE filter in parallel
    Pentair VF3050 pump

  7. Back To Top    #7
    JasonLion's Avatar
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    Re: Electrical supply

    Most SWGs will shut down when they detect a lack of flow, but it is better if you also power the SWG on the pump circuit from after the timer so you have a double check to be sure that the cell goes off when the pump goes off.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: Electrical supply

    Thanks for all the help, this forum is a great help.

  9. Back To Top    #9

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    Re: Electrical supply

    I like the idea of the variable speed pump. The PB is selling us the Hayward Super Pump 3/4 HP, but I think the Hayward TriStar Energy Solution would be better. Anyone know what kind of price difference there is and should we stick with 3/4HP?

  10. Back To Top    #10
    JasonLion's Avatar
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    Re: Electrical supply

    A single speed 3/4 HP pump might cost say $350, a two speed pump might cost $500, and a variable speed pump around $1000. The more expensive pumps will pay you back in electrical savings. How quickly they pay back depends on your electrical rates.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  11. Back To Top    #11

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    Re: Electrical supply

    This forum is so much help!
    I have one other question, What all do I need to bond? Pump, Heater, SGW control box, Pool frame, Ladder rails, Sub panel, Timer, do i need to bond the aux receptical or pool lights. Is there anything i'm missing or doing anything i don't need.

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