speaking of safety

Discussion in 'Irrigation' started by 1idejim, Aug 31, 2012.

  1. 1idejim

    1idejim LawnSite Fanatic
    Posts: 9,340

  2. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,914

  3. 1idejim

    1idejim LawnSite Fanatic
    Posts: 9,340

    this mishap just drives my point home, you never take electricity or water for granted. many irrigators install controllers using methods that are unacceptable or illegal, bypassing GFCI circuits, failing to install recommended grounding or using a higher amperage fuse to name a few.

    utilities are ignored by some irrigators. they plow or trench without performing sweep searches and justify it by saying that they are small and non deadly for that reason. we do not have x-ray vision so we cannot know what lies underground.

    we will have to wait for the results of the investigation to know the cause of this and other "accidents" such as this one i posted earlier this year.

    http://www.huffingtonpost.com/2012/06/28/ashton-jojo-dies-while-playing-mini-golf_n_1635952.html

    i am not saying that one should live his life in fear, (you have seen some of the work that i have done within inches of "hot" utilities) but that if you learn to have the utmost respect for underground utilities, perform your work in accordance to the codes, you, your workers and your clients may never have to deal with such tragic events.
     
  4. muddywater

    muddywater LawnSite Bronze Member
    Posts: 1,813

    Gfi makes sense to me near any body of water or potential water hazard.

    Inside a covered garage? What is the reasoning for the code to specify gfci? What is the hazard?
     
  5. muddywater

    muddywater LawnSite Bronze Member
    Posts: 1,813

    What is the cheapest locator for tracing underground power line? I already have a 521 on service truck, but was wondering if there was something a little cheaper so my install crew can trace power lines if necessary.

    Trenched through a 220 line the other day and I ended up replacing entire line at my expense... need to start locating them. You hear that jim! You are right, no more trench and repair. Trace then trench!
     
  6. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,914

    We located a ton of utilities with the 521, but I always had the electricians come over to show us how to hook up without frying ourselves.
     
  7. muddywater

    muddywater LawnSite Bronze Member
    Posts: 1,813

    Breaker panel man! I replaced the 220 line myself, repaired broken conduit, and pulled wire back through it. I am not an electrician, but i did stay at a holiday inn express last night. Guess i need to buy another 521.
     
  8. 1idejim

    1idejim LawnSite Fanatic
    Posts: 9,340

    the 521 will work, especially if it is an older one. if buying new, the pro-800 is my favorite. the 800 has induction capabilities and null/peak direct connection modes.

    buying used i would lean toward the pipehorn as it also has induction mode.

    ML was referring to connecting the transmitter to trace, always connect to either the ground wire from the panel or the panel lid. NEVER enter the panel for a point of connection, all utilities are grounded so connecting to the ground is your best bet.

    glad no one was hurt.
     
  9. S.O.Contracting

    S.O.Contracting LawnSite Member
    Posts: 186

    Greenlee 501 works well also. And it has an induction mode so wires etc do not have to be unhooked.
     
  10. 1idejim

    1idejim LawnSite Fanatic
    Posts: 9,340

    501 @ 447 khz

    pipehorn @ 9 or 480 khz

    800 @ 185 khz

    4110 @ 83 khz

    higher the frequency the more the coupling issues and shorter the distance, the lower the frequency, longer distances and fewer coupling issues.

    you guys complain about bleeding signals @ 1.75 khz, wait till you try some of these. :laugh:
     

Share This Page