Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
I have 2 fans on one switch , wired from switch to fan #1 then to fan #2 - fan #2 runs slower do I need a higher amp switch
If the fans are run in parallel then they should run the same speed.
If, however, you (accidentally) wired them in series, they will run slower and they can end up running at different speeds depending on the motor and the drag.
Required, but never shown