How to Choose Your Transformer:
- Calculate the total wattage of your LED light fixtures in your plan
- Choose the transformer that is large enough to support the total wattage you need
- The transformer wattage load (total watts needed for your fixtures) should be within 80 percent of the rated capacity of the transformer
For example: if you have 8 pack 5W LED landscape lights, so the total wattage is 40W. Then you can choose the transformer higher than 50W(=40W/0.8).