The power consumption is stated in VA or Watts and can in most instances be considered the same, 300W = 300VA

Most appliances will have a rating label on the back Stating voltage and power for example: 120vac 198va in this case choose a 200va transformer

Always check individual rating label or instruction whenever possible!

If an inadequately rated transformer is used, the transformer will cut out periodically or blow fuses. In all cases it is important that the transformer is rated above the appliance with which it is to be used.

Listed below are typical ratings

Twin socket Transformers. The total load of both appliances must not exceed the rating shown on the label.

The above figures are an indication only and legal responsibility or liability for the accuracy or otherwise of any statement herein is hereby excluded in respect of the author of the material.