Can I wire multiple rails to one timer?

Yes you can connect more than one heated towel rail to a timer. However there is a few things to consider

  1. You cannot exceed the load rating of the timer; this varies from 1 amp to 16 amps depending on the timer
  2. All the rails on the timer will be on at the same time, they can not be set on individual schedules. This is not usual an issue if they in the same bathroom but is a point to be aware of

The addition of a timer makes your life simple and rewarding with warm towels everyday.