Multi Transformer Apps.

Discussion in 'Landscape Lighting' started by worx, Aug 10, 2008.

  1. worx

    worx LawnSite Senior Member
    Posts: 252

    What is the best way in multi trans. installs to have all lights come on together? Could this put too much load on the breaker?
     
  2. INTEGRA Bespoke Lighting

    INTEGRA Bespoke Lighting LawnSite Platinum Member
    Posts: 4,102

    It is pretty rare that in a multiple transformer installation that any two transformers would be powered by the same circuit. Usually the LV transformers are located such that they tap into different 120V circuits.

    However, if this is not the case, and you are loading up multiple LV transformers onto a single 120V circuit, then you have to be congnizant of the max amp load of the transformers you are using and ensure that you do not exceed the rating of the breaker that is protecting the 120V circuit. Remember that you should not load more then 12 Amps onto a 15 Amp Breaker.

    There are a multitude of ways to control and synchronize multiple transformers. It all depends on the layout, the circuitry and the budget.

    Have a great day.
     
  3. The Lighting Geek

    The Lighting Geek LawnSite Senior Member
    Posts: 875

    The NEC says you can only use 80% of the capacity of any device or in this case a breaker. You need to calculate the loads accordingly and use more circuits if necessary. You can get all the transformers to come on together regardless of how many circuits by using Unique's Sequencers. Basically you use one transformers as a controlling unit and the rest become slaves. There is no limit to how many transformers that can be controlled. The Sequencer plugs into the transformer just like a timer but is activated by 12 volts from another transformer.
     
  4. Pro-Scapes

    Pro-Scapes LawnSite Platinum Member
    Posts: 4,181

    sequencers can come in real handy sometimes but depending on a layout they can become alot of extra work.

    We tend to use a upb device in each trans with a central timer located inside the dwelling or garage.

    Keep in mind a sequencer needs 12 volts run to it from the primary system. This can be a lead from a hub on the primary into the "slave" or sequencer controlled system or a direct line off the appropriate tap.

    By the time you figure the price of wire and the sequencer you can often times just install a second UPB control device inside the other transformers.

    There are other options out there
     
  5. INTEGRA Bespoke Lighting

    INTEGRA Bespoke Lighting LawnSite Platinum Member
    Posts: 4,102

    Up until this year I had been using Relay Modules (Nightscaping "Islander Module", T-SS-12V is the part number and as a side bar, Nightscaping was the first to introduce the inter-transformer relay... Thanks to Mike and Kevin Islander)

    They worked pretty well, but Billy is right.... by the time you account for the relay module, the extra wire required to hook them up, and the labour to install said wire, you are pretty much in the ball park of adding UPB controls. This year it is UPB all the way... "I'm Lovin it".
     
  6. worx

    worx LawnSite Senior Member
    Posts: 252

    I am sorry about the load question from multi trans. on a circuit,....just not thinking clearly. :hammerhead: But back to the UPB. It sounds to me that this device is wireless...? Do you need one control device centrally located and receivers in each trans. that will be controlled?
     
  7. Pro-Scapes

    Pro-Scapes LawnSite Platinum Member
    Posts: 4,181

    yes you have a timer or schedualer centrally located then UPB sends a signal over the power lines to moduals you install in transformers.

    There are plug in moduals that will go in the timer plug of most transformers. There are also a host of controled relays...recepicals...switches and other devices to help you integrate all the exterior lighting into your plan.

    Since we have began integrating existing outdoor lights into our overal scene it has taking our projects to a new level. It does come with a learning curve tho.

    I would suggest you start with controlscape system and then once you get upb down you can decide if you want to integrate with multiple links in upstart computer software to achieve different scenes and light levels.
     
  8. The Lighting Geek

    The Lighting Geek LawnSite Senior Member
    Posts: 875

    I would agree that UPB is a better option because it offers more options. Controlling the outdoor house lights is a great idea especially with dimming modules on the house.
     
  9. JoeyD

    JoeyD LawnSite Silver Member
    Posts: 2,933

    you can use UPB to the first unit then use Sequencers for the rest on that zone. The Sequencer works expecially well if you have 2+ transformers banked side by side. But if UPB is not something you want to spend the time and money on or your client is not interested then the Sequencer is your BEST option for automating the system affordably and reliably without having to use a computer interface or by buying expensive components.

    Let me know if you have any questions on the Unique Lighting Sequencer!!

    [​IMG]
     
  10. Pro-Scapes

    Pro-Scapes LawnSite Platinum Member
    Posts: 4,181

    They can be a great tool Joey but what happens if you have a trans a couple hundred feet from the nearest 12v source on the main ? or what happens if you cant find a conduit across a 30 ft driveway? By the time you over come these obstacles you can buy the controlscapes system and install 2 mods.
     

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