About float switches - for pump run-dry protection in a small greenhouse
Channel: Reid Allaway
Date: 2020-03-09

In this video I describe and illustrate the function and installation of a typcial electromechanical float switch and how we use one in our small seedling production greenhouse to provide run-dry protection for the jet pump we use for watering.

Our old float switch had failed (water got in caused a ground fault) so I took it apart to see what makes it tick.  A quick look on YouTube suggests that there are a few other models but this style seems to be ubiquitous in our region.

I hope this information proves useful or at least interesting to someone.