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Thread: Time Clock

  1. #1
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    Time Clock

    Can someone give me a brief overview on how an override and timeclock are wired together with the lighting circuit and to the panel. It's a Tork DLC 400BP.

    I'm not exactly clear based on Tork wiring diagram link. Thanks.

    http://waterheatertimer.org/pdf/Tork...sell-sheet.pdf
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  2. #2
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    The time clock and the override switch are both momentary contact otherwise the operation of one would not allow the other to override it. This is a common setup when using a latching lighting contactor like an ASCO 917 and all momentary controls.
    Rob

    Moderator

    All responses based on the 2014 NEC unless otherwise noted

  3. #3
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    Quote Originally Posted by infinity View Post
    The time clock and the override switch are both momentary contact otherwise the operation of one would not allow the other to override it. This is a common setup when using a latching lighting contactor like an ASCO 917 and all momentary controls.
    Thanks ...so how are they wired together? Lighting circuit to time lock and to panel?

  4. #4
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    With momentary switching we use a lighting contactor to control multiple lighting circuits. The contactor operation is controlled by the time clock and the override switches.
    Rob

    Moderator

    All responses based on the 2014 NEC unless otherwise noted

  5. #5
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    Quote Originally Posted by infinity View Post
    With momentary switching we use a lighting contactor to control multiple lighting circuits. The contactor operation is controlled by the time clock and the override switches.
    yeah, but if he doesn't know if it's a latching contactor or not,
    that will change how things get wired.

    most of the contactors i see around here are NOT latching.
    this way, the contractor can save money, and the contactor
    will buzz all day..... added bonus.

    bypass timers in energy saving land are limited to two hours.
    those normally are wind up wall timers across the coil of an non
    latching contactor, in parallell with a maintained contact on
    the time clock. pretty straightforward.

    and, to be stark and ugly about it, many of the sparkies around
    here would have a hard time figuring out that you need a latch,
    and an unlatch pulse. they can't even figure out two wire control.

    last night, i was by LAX doing a lighting certification. nLight system.

    a state licensed electrician put in a $900 gateway, to control three
    lights in the back of store. gateway was not programmed, nor hooked
    to the lights. it just sat there and glowed. for those not familiar with
    the nLight system, a gateway is capable of controlling several thousand
    devices, with daylighting, scenes, demand response, yada, yada.
    it's the equivalent of a lutron quantum system. to use it to control
    three lights in a storeroom is absurd. like powering a prius with a saturn 5.

    the three lights, and two ceiling mounted occupancy sensors were
    hooked together with cat 5, but the guy didn't use a power supply,
    so none of it worked. no device power. the lights were on, but nobody
    was home.

    and there was no wall switch, for local control.

    i will have to make a return visit at another time, to complete the
    certification. additional charges will apply.

    and i had to explain to the general contractor what "incandescently stupid"
    means. it's when a person is so dumb they glow softly in the dark.

    this electrician was about 15 watts of stupid.
    ~New signature under construction.~
    ~~~~Please excuse the mess.~~~~

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