WarmlyYours towel warmers are all 120VAC units. Towel warmers are available in wattages from 35 watts all the way up to 250 watts. A single towel warmer would typically range from 1-2 amps based on the model. Wire size and breaker size need to be selected based on the total amperage of the towel warmer(s). For towel warmers installed in bathrooms, a GFCI breaker is required.