Overview Product Description L-30-3, Large unit, 3.5 in. x 3.5 in. bulb, 30 foot, 13 amp, 3 Wire, normally open or closed, Tethered Mechanical Float Switch (no plug) Generally used for pump and or alarm controls. Can be used as level indicators. 16 gauge 3-conductor wire. May require 1-3 day lead time to build. Product Videos Custom Field Product Reviews