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12v Dimmer switches

Discussion in 'Landscape Lighting' started by Pro-Scapes, Oct 15, 2009.

  1. Pro-Scapes

    Pro-Scapes LawnSite Platinum Member
    Posts: 4,181

    I know this has been discussed some but here is the situation.

    Installed a pergola about 2 yrs ago with Stellars. They wanted this lighting switchable so we installed a toggler and the system has worked flawless. This is a signle run out of 7 runs in a 900w MDL transformer.

    Now the client would like to be able to dim that one run but doesnt want to fork out for the ABT or a seperate trans. There is already a single gang with flip cover in a mortise on the pergola post we installed. Does anyone know of a GOOD 12v dimmer rated at about at LEAST 10-15a we can swap in place of the toggler ?
  2. INTEGRA Bespoke Lighting

    INTEGRA Bespoke Lighting LawnSite Platinum Member
    Posts: 4,102

  3. Pro-Scapes

    Pro-Scapes LawnSite Platinum Member
    Posts: 4,181

    Thanks James thats exactly what I was looking for. I knew I had seen it. Normally when I create a dimmed section I just install a seperate trans and dim the trans.
  4. klkanders

    klkanders LawnSite Senior Member
    from Midwest
    Posts: 848

    James beat me to it. Gerry at TerraDek carries these and I have used them.
    Should fit right in place of your other switch. Good Luck!
  5. Pro-Scapes

    Pro-Scapes LawnSite Platinum Member
    Posts: 4,181

    Awsome I will hit Gerry up
  6. Terradek

    Terradek LawnSite Member
    Posts: 104

    Thanks for the mention...

    We stock both the 10amp and 20amp versions of this product. The 10amp is a single gang size and the 20amp is a double gang size.

    They are great for controlling the light intensity on single runs.
  7. Pro-Scapes

    Pro-Scapes LawnSite Platinum Member
    Posts: 4,181

    I emailed you about it Gerry and just replied to you. That run is pulling 8a and I do all the maint there so shouldnt be an issue running the 10a version since the single gang is already mortised into a heart pine post.
  8. seolatlanta

    seolatlanta LawnSite Member
    Posts: 176

    Just so I am clear- you can run your to be dimmed home run through a gang box with one of these installed - and instead of buying a seperate transformer , you just use these?

    So cool , are they reliable? Can they take harsh weather or irrigation soaking them?
  9. Rainman7

    Rainman7 LawnSite Senior Member
    from NY
    Posts: 288

    You can dim a whole transformer? I am somewhat new to this and questioned whether or not you can dim a transformer mainly because I was not sure if this would have any adverse effect on the life of the bulbs. A standard(properly rated) dimmer can do this?
  10. Pro-Scapes

    Pro-Scapes LawnSite Platinum Member
    Posts: 4,181

    The dimmer needs to be rated for the type of transformer it is... ie magnetic..electronic etc.

    Also something that makes it impossible to dim some transformers is many of them use a relay for the timer control plug inside. As soon as you dim down slightly the relay will begin to chatter on these.

    When I need a dimmable trans my first choice is the Gambino Magnums (pm me if you need info) or the unique sub-terranean ones if I need a below grade trans.

    I know there are some other dimmable ones out there but these are the 2 I have experience with. Just make sure you use a properly rated dimmer. Most of ours use either UPB dimmer controls or are hard wired into an home automation system.

    Lamp life is a complete new discussion. All of our dimmable systems are maintained by us and checked at night 2-3 times per year for lamp color.

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