How do I size a transformer for my lighting installation?



Calculate the total wattage of all lighting fixtures that will be hooked up to your transformer. The total wattage will be the minimum required output of the transformer.

When sizing a transformer for an LED installation, use the wattage consumed by each lamp, not the wattage output or brightness equivalent.

The industry recommends utilizing 80% of your transformer’s capacity for optimal system life.

Example: a 60 watt transformer would be ideal for the lighting installation below.