I am looking to install a new, all-LED low voltage lighting system. Basically I want to illuminate the 2 edges of my lot with 100' of 12V up lights and a few path lights. It's a pretty small system, only 171 watts with half of the wattage on either side. The problem is that the 2 sides are separated by 175'. I have Schedule 40 conduit underground between the 2, so I could run 12awg or even larger between them, if need be, to account for voltage drop.
Can I install a single 300W transformer to run both sides or would I need to have 2 transformers on either side of my lot to run the 12V because of the distance between the 2 sides? I've also read about people using SPDT relays to turn on a second transformer, but I'd rather only have 1 transformer if I can to simplify things.
I asked this question with an oversimplification. I now realize I should have been more precise. I will update with more details, but please feel free to ignore this due to all of the confusion.
Here is the real diagram:
- A is my "utility area" with irrigation setup, etc.
- B is an underground utility box with multiple conduits
- C is an underground utility box with multiple conduits
- D is an underground utility box with multiple conduits at my electric meter
- The "175'" is the sum of conduits from A->B->C->D.
- There is 120V available at each site.
Like I said above, I should have been more precise from the beginning. My apologies, but I'm looking for how to design this low voltage system. I have some LEDs (stair lights) that must operate at 12V. I have not purchased the other lights, but the ones I am looking at are also 12V, but perhaps I could find similar 24V LED lights.
I had hoped to be able to install a single transformer at location A since that's where all of my other equipment is. Now, it sounds like that's infeasible. Could I possibly run a single transformer anywhere else (perhaps location C)?
If I'm reading the great responses I've received so far, it sounds like ideally I should have at least 2 transformers - one at B and another at D. I could link them with a relay or they could use their own photosensors.
Is there a better way here that I'm missing?