How to Choose Your Transformer 1.Calculate the total wattage of your light fixtures in your plan 2.Choose the transformer that is large enough to support the total wattage you need 3.The transformer wattage load (total watts needed for your fixtures) should be within 80% of the rated capacity of the transformer. For example: if you have 15 pack 13W landscape lights, so the total wattage is 195W.
Then you can choose the transformer higher than 244W(=195W/0.8). 120V AC to 12V/13V/14V AC You can choose 12V/13V/14V terminal outputs according to the length and wire gauge of your cable, make sure that the total wattage of your landscape lights does not exceed 240W(300Wx0.8) Specifications Input: 120VAC, 60Hz Output: 12V/13V/14V AC Max Power Rating: 300W UL Listed Packing List: 1 x Transformer 1 x Use Manual 2 x Mounting Bracket 4 x Terminal caps Tips: The transformer has 3 outputs with a total power of 300W. You can choose any of them to connect with your cable.
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