VARILIGHT Technical Support

Transformers

How should I calculate the lighting load for dimming when there are transformers in the circuit?

If you are using VARILIGHT transformers you can calculate the load by simply adding the ratings of the lamps the transformer is powering.

If you have a dimmable electronic transformer from another manufacturer then the load equates to the rating of the transformer(s), not the lamps. If you have more than one transformer in the circuit then add the ratings of all the transformers to calculate the load on the dimmer. Please note, unless you are using VARILIGHT transformers where there is no restriction (up to the maximum load of the dimmer), we recommend using a maximum of 5 transformers per dimmer circuit.

If your transformer does not say that it is dimmable it is unlikely to work with any dimmer.