Coiling cable

Discussion in 'Irrigation' started by jbailey52, Aug 14, 2013.

  1. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,799

    A shunt wire from the coil to Boot's privates should prove the theory.
     
  2. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,009

    How about an over-under number for the inductance of your coiled wire?
     
  3. Stillwater

    Stillwater LawnSite Platinum Member
    Posts: 4,808

    In audio Yes,,, simply because air coils are unaffected by the current they are carrying. A ferro coil will peak early during a moderate power event and then drop and introduce a harmonic artifact. In hifi you don't want distortion in the network. With air coils you have better power handling higher efficiency and operate near the 1ghz frequencies Ferromagnetic coils can suffer from iron loss also sometimes called copper loss at higher frequencies, not all but most ferro coils will loose it above 100 mhz.
     
  4. irrig8r

    irrig8r LawnSite Platinum Member
    Posts: 4,535

    Really? Never heard that reason. I've always done it to allow a solenoid enough slack to pull it out of the box if needed when servicing, yet keep the wires neat in the box. And I've never heard of a lightning ground strike around here in my 30+ years in the business.
     
  5. 1idejim

    1idejim LawnSite Fanatic
    Posts: 9,132

    Derryberry and Lefty both feel the coils work. I don't know Derryberry but i have read his book. Lefty didn't write a book but he did teach me a lot about sprinklers.

    I can't say that coils work and i can't say that they do. What i can say is, i would rather use the coils and never find out they work than not use them and have a strike or spike damage and wonder, what if???

    As far as no ground strikes in your area, you're in a good place. We get them often enough in Jeff.

    In '73 a cowboy and his horse were struck and killed while working a gate (in the Hollister hills i believe) . I don't remember his name right now but i remember it was his 21st birthday.
     
  6. AI Inc

    AI Inc LawnSite Fanatic
    Posts: 25,236

    Did one last week. ICC blown right off the back of a barn. 6 solonoids and 80 ft of wire.
     
  7. Stillwater

    Stillwater LawnSite Platinum Member
    Posts: 4,808

    AI did you happen to snap any pictures ?
     
  8. AI Inc

    AI Inc LawnSite Fanatic
    Posts: 25,236

    No. havnt plugged my camara in in over a yr.
     
  9. Stillwater

    Stillwater LawnSite Platinum Member
    Posts: 4,808

    A smoldering icc would make nice wall paper
     
  10. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,009

    I'm tempted to set up a lightning rod connected to a controller and record video.
     

Share This Page