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Thread: Intermatic Timer connection to pool light

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    Intermatic Timer connection to pool light

    I have an Intermatic T104 timer, with the pool pump connected to load 1 (screw 2) and load 2 (screw 4). (pump is working fine) Power comes into the timer box from the left. Two black wires go to line 1 (screw 1) and line 2 (screw 2). Coming into the other side of the timer box, I have a neutral, ground, and hot wire that goes to an outlet box, and then to the on/off switch that goes to my pool light. My ground wires (green) are all tied together, as are the neutral (white wires). Which screw connection on the timer should I attach the hot wire from the outlet/pool light switch, so that the pool light can be turned on, and the outlet box is always on, when the pump is either on or off? Searched the threads for this, but couldn't find anything. I am new here to this site, and haven't figured out how to add my pool info yet. IG, plaster, 18-20K, PacFab Mitra 80 cartridge filter, recently switched to bleach and borax, and am really glad to have found this site. Water is sparkling!
    Attached Files Attached Files
    20,000 IG, freeform, plaster, PacFab Mitra 80 gpm cartridge filter,
    1.5 hp pump, bleach, borax, crystal clear water

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    Join Date
    Jun 2007
    Location
    SF Bay Area
    Posts
    441

    Re: Intermatic Timer connection to pool light

    Greg,

    Welcome to BABC!

    What do you have coming in for the power wires? 2 black wires and a green? Or 2 black wires, one white wire, and a green wire? If it is the former, then you only have 240 Volts available to you. If it is the latter, then you have both 240 Volts AND 120 Volts available to you. You need the latter (2 black wires, one white wire, and a green wire) in order to run both the 240 Volt filter pump and the 120 Volt pool light.

    Let us know what you have. A picture of the guts of the timer enclosure would be even better.
    24,000 gallon inground freeform pool/spa circa 1983 (113 ft perimeter, 625 sq ft) with 350 gallon attached spill-over spa
    2007 2 HP, three-phase Hayward TriStar pump which is powered by an Ikeric VS-200 variable speed drive system
    1983 Laars XE Pool/Spa Heater Type ES 400,000 BTU, 1998 Hayward Super Star-Clear C-4000 cartridge filter (400 sq ft, 4 separate cartridges)
    1998 Polaris 380 pressure-side cleaner w/ 3/4 HP booster pump
    One skimmer :( and one PoolSkim :), One Supervision Galaxy LED pool lamp, Second story solar panels
    Hayward/GoldLine AquaLogic PS4 (replaced 1983 vintage dual circuit Intermatic timer)

  3. Back To Top    #3

    Re: Intermatic Timer connection to pool light

    I have two white wires, two black wires, and a bare copper ground wire coming into the timer box from circuit box. I will post a photo tomorrow, when I have some light on the subject. Thanks.
    20,000 IG, freeform, plaster, PacFab Mitra 80 gpm cartridge filter,
    1.5 hp pump, bleach, borax, crystal clear water

  4. Back To Top    #4

    Join Date
    Jun 2007
    Location
    SF Bay Area
    Posts
    441

    Re: Intermatic Timer connection to pool light

    Two white wires? And a bare copper wire instead of a green wire? That seems odd.

    Is the circuit box very far away? And are the number and color of wires the same on the circuit box end? A picture of how these wires tie into the circuit breakers, and neutral and ground bars would also be useful. Hopefully we'll also be able to see the amp rating and number of poles of the circuit breaker.
    24,000 gallon inground freeform pool/spa circa 1983 (113 ft perimeter, 625 sq ft) with 350 gallon attached spill-over spa
    2007 2 HP, three-phase Hayward TriStar pump which is powered by an Ikeric VS-200 variable speed drive system
    1983 Laars XE Pool/Spa Heater Type ES 400,000 BTU, 1998 Hayward Super Star-Clear C-4000 cartridge filter (400 sq ft, 4 separate cartridges)
    1998 Polaris 380 pressure-side cleaner w/ 3/4 HP booster pump
    One skimmer :( and one PoolSkim :), One Supervision Galaxy LED pool lamp, Second story solar panels
    Hayward/GoldLine AquaLogic PS4 (replaced 1983 vintage dual circuit Intermatic timer)

  5. Back To Top    #5

    Re: Intermatic Timer connection to pool light

    Thanks for checking this out. I figured out the problem I was having after skimming through some other articles here on TFP. I removed the GFI outlet and replaced it, and everything is working like it should. Now, I need to buy that deluxe water test kit.
    20,000 IG, freeform, plaster, PacFab Mitra 80 gpm cartridge filter,
    1.5 hp pump, bleach, borax, crystal clear water

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