Common Wire Question

Discussion in 'Irrigation' started by GreenLight, Feb 1, 2009.

  1. GreenLight

    GreenLight LawnSite Senior Member
    Posts: 466

    For the past 2 years when I am running my common wire I have spliced individually to each and every valve with the common, even in spots that have multiple valves in a tight manifold or group. I have been told on more than one occasion that it would save me time, in places of multiple valves, to take one lead from each valve and simply tie them together with the common as opposed to wiring each one independent.

    I guess in the past I was always concerned about tying the valve wires together, but if they are just common leads is this going to make a difference?
  2. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,708

    If you make reliable electrical connections, the extras shouldn't be a problem. I tie all the valve commons together.
  3. ARGOS

    ARGOS LawnSite Silver Member
    Posts: 2,808

    Now that's common knowledge.
    Last edited: Feb 1, 2009
  4. EagleLandscape

    EagleLandscape LawnSite Platinum Member
    Male, from Garland, Texas
    Posts: 4,347

    Yes, tie them all into the same (common) wire.

    thats why we call it the common.
  5. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,708

    I suppose the screwballs that stuff eight or more valves into a box might have trouble with some of the waterproof connectors. :)
  6. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,978

    In multiple valve manifolds, I would tie the incoming common with a group of "shunt" commons, with a single wire to each valve. The multiple commons would get a DBY, the shunts connecting to each valve would get a King "blue". Reason being each valve could be serviced without disturbing the entire common bundle. (No W*M jokes, please.)
  7. GreenLight

    GreenLight LawnSite Senior Member
    Posts: 466

    Thanks for the quick responses everyone.

    I just wanted reassurance that his was acceptable as I had always individually tied them because I was afraid having all the common leads from the valves touching each other could cause some adverse affect to the solenoid (I don't have any logic behind that thinking, other than paranoia and being overly cautious)...
  8. GreenLight

    GreenLight LawnSite Senior Member
    Posts: 466


    Just checking to see if I am on the same page here. You are basically saying use the incoming common wire as a hub and then run common shunts (leads) to each valve?

    If that is the case, then I have been following your advice for a long time. That is the way I had always done it (and theoretically, for service it is a great thing). Sorry, my wording made it sound like I was t-ing off the common to each individual valve. But what I meant was I had hubbed from the common then gone individually to each valve because I was paranoid about having the VALVE leads touching each other.

    Thanks for your feedback, at least I feel a bit justified for my past work.
  9. Waterit

    Waterit LawnSite Silver Member
    Posts: 2,906

    I'm doubly impressed - a post that is actually about irrigation followed by sane reasoned answers...
  10. hoskm01

    hoskm01 LawnSite Fanatic
    Posts: 5,690

    Careful, you'll derail it with those kind of epiphanies.

    GreenLight. Youll have no problem having all the individual commons from the valves touching.

    With them all attached to the common at some point, they really are all touching anyway. Whats the diff?

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