going to pull the trigger on a ground fault

Discussion in 'Irrigation' started by CAPT Stream Rotar, Apr 18, 2012.

  1. You talk and instruct like a Texan.
     
  2. Sprinkus

    Sprinkus LawnSite Silver Member
    Posts: 2,048

    Hmmm, I was thinkin' it sounded more like Yoda.
     
  3. DanaMac

    DanaMac LawnSite Fanatic
    Posts: 13,156

    Mmmmm...... follow the null you must, to find what you seek.
     
  4. Duekster

    Duekster LawnSite Fanatic
    from DFW, TX
    Posts: 7,961

    The bundle comes in from the parking lot right behind my truck.
    Note the sidewalk has metal edging that runs paralell to the bundle, sometimes right over it.

    This splice box was installed because a trencher was sent through installing an errosion fence. A GC vendor did some of the repairs. I wonder what the logic is of the one orange and two blues in there the nut? There are two splices like this?

    I have fixed 3 others breaks but this one is kicking my butt.

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    I will scale down the photos.
     
    Last edited: May 5, 2012
  5. Waterlogged

    Waterlogged LawnSite Senior Member
    from Texas
    Posts: 580

    Do you have a toner ? Sometimes the off colors are extra, what is your problem ?
     
  6. Duekster

    Duekster LawnSite Fanatic
    from DFW, TX
    Posts: 7,961

    Hey Waterlogged.

    All I have is the 521 and the Multi.

    Obviously, I either need more experience on it, some other piece of equipment ot Both.

    Most of the time the 521 works well for me but not always as I mentioned when I first jumped in this thread.

    The problem is it seems I do have an Open to air circuit. The circuit run is about 1800 feet or so. I know the basic path, where the valve is located. I just can not find the open and need to get this thing resolved ASAP

    I can see the Blues are the spares and I believe this circuit was added after the face is is run on a spare.
    I just am not sure why there would be two blues and an orange under one Splice.
     
  7. Waterlogged

    Waterlogged LawnSite Senior Member
    from Texas
    Posts: 580

    Have you tried from the valve back to the timer? Does the wire you are working on go through the box with splices, with a toner you can find the wire you are looking for. It may be that someone spiced on to a wire that is not used. Check your batt. on your 521 1800 ft is a long way. How many timers. You said open but did you check for power at the valve.
     
  8. 1idejim

    1idejim LawnSite Fanatic
    Posts: 8,859

    which wire are you chasing in the box? i'd find that first and chase the other issues second.

    you have a mess on your hands for sure for certain. you can use the 521 in place of a toner in emergencies, the aerial is vertical which gives you a null response when above the wire. when placed along the wire you get a peak signal response similar to a toner.

    you could turn the station on and set your DMM to 200vac, insert the black lead into the earth and either puncture the insulation with the red probe or insert the probe into the wire nut and test the voltage to determine the proper wire to chase.

    WHAT IF:

    the blues / orange are 2 valves on 1 station?

    1 valve on 2 stations?
     
  9. 1idejim

    1idejim LawnSite Fanatic
    Posts: 8,859

    unless the aerial is horizontal, then you will seek peak :)
     
  10. Duekster

    Duekster LawnSite Fanatic
    from DFW, TX
    Posts: 7,961

    Only one timer.

    Yes, I have but the signal gets weak after about 1200 feet. :cry:

    Guess I will try to verify which wire this is in the junction shown then go from there. There should a junction somewhere between this one and the controller.

    Unfortunately, while I am likely the most familair with the site several others have worked on this system besides me.
     

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