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Circuit breakers tripping?

Discussion in 'Landscape Lighting' started by NC_Irrigator, Feb 20, 2006.

  1. NC_Irrigator

    NC_Irrigator LawnSite Bronze Member
    from NC
    Messages: 1,445

    Got a couple of customers with 600-900w transformers tripping breakers. Amp meter reads avg. 6 amps 7.5 right when it clicks on.
    All wiring been checked. All lights checked for proper voltage. All wiring sized and calculated correctly.

    Nothing else installed on the breaker. Just a receptacle dropped out of a panel.

    Discuss.

    Inrush amps & amps pulling.

    Anyone run across similar problems.
     
  2. NC_Irrigator

    NC_Irrigator LawnSite Bronze Member
    from NC
    Messages: 1,445

    my suppliers (John Deere & Smith Turf) and the manufacturer (vista) are coming up with limited answers.....
     
  3. landscapelight

    landscapelight LawnSite Member
    Messages: 36

    Primary or secondary (which one) breakers tripping?
     
  4. landscapelight

    landscapelight LawnSite Member
    Messages: 36

    How are you switching the transformers?

    15 or 20 amp primary breaker?
     
  5. YardPro

    YardPro LawnSite Gold Member
    Messages: 3,570

    is it on the same circut as the bathroom???
    if so when a hair dryer is used at night it will kick off the breaker if your lights are on as well..
     
  6. landscapelight

    landscapelight LawnSite Member
    Messages: 36

    Yard pro, initial post stated dedicated circuit
     
  7. niteliters

    niteliters LawnSite Senior Member
    Messages: 537

    how far is the outlet located away from the panel??? if more than 15ft that should not be a problem..if closer that could be causing primary to trip.
     
  8. niteliters

    niteliters LawnSite Senior Member
    Messages: 537

    if the secondary is tripping and you are using a multi tap transformer do what you've done and measure the cable for amperage. the amperage result should be multiplied by the voltage tap to which the cable run is connected. this will determine the actual (dynamic) wattage requirment.
    hope this helps
    chris
     
  9. NC_Irrigator

    NC_Irrigator LawnSite Bronze Member
    from NC
    Messages: 1,445

    Breaker on service panel tripping. 20amp breaker SqrD QO

    Another customer GE 20amp beside service panel doing same thing.

    Transformer mounted beside the service panel.

    Dedicated breaker.
     
  10. niteliters

    niteliters LawnSite Senior Member
    Messages: 537

    distance from the transformer to a primary breaker does not matter most of the time, but to avoid potential nuisance tripping the transformer should be mounted 15' away from primary breaker.
     

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