How Big Of A Transformer Do I Need For Landscape Lighting

Enter units of product and conversion is made to show amount of transformer capacity used.

How big of a transformer do i need for landscape lighting. 10 lights X 30 watts 300 watts and 300 is 80 of 375. When choosing a transformer its important to pick one that can handle the total wattage of your fixtures. Therefor technically you could have 30 lights.

Your friend will need to purchase a multi-tap transformer 12-22v to offset the voltage drop if you are going to continue on with using halogen lamps. I dont recommend using the full value because you will loose wattage over time and also it depends how long the wire is your using. The set up is I have one transformer 300w max 12 vac only as mentioned above with two runs coming.

Once your landscape lighting design is complete you can figure out what size of low-voltage transformer you need. 8w with a 10w transformer 16w with a 20w transformer etc. So if you want to connect eight landscape lights to an electronic transformer and the lights use 20 watts each you would need a 160 watt transformer.

Choose the voltage terminal in the transformer for each zone that puts all of your lights between 108 volts and 118 volts. Finally the cost difference between a 100 and 200 watt transformer is very small compared to the huge headaches that erupt if the transformer is undersized. Each light has a watt value ie 10w.

Transformers generally range from 150- to 900-watt capacity. I have a landscape lighting system with 19 kichler lights rated at 85 watts for a total wattage of 1615. Note that transformer sizing is not as simple as adding together the wattage of all the lights on a system to determine the correct transformer size.

Benefits Of A Multi-tap Transformer A multi-tap offers multiple voltage output connections ranging from as low as 12 volts up to 18 volts. 8 lights X 20 watts 160 watts. You also need a transformer or two to step down the 120 Volts coming from your house to 12 Volts for your outdoor fixtures 100 feet or more of landscape wire and a square-blade shovel.