Parallax Power Supply Automatic Load Shed Device. The Automatic Load Shed Device (ALS 20) allows operation of two 20Amp loads from a single 20Amp branch circuit. Meets NEC requirements for operation of two 120-volt thermostatically controlled devices. ALS 20 operates a shedable load such as an electric water heater and a priority load such as a microwave oven. The shedable load is delayed temporarily via ALS 20 to allow operation of the on-demand priority load. ALS 20 is an important safety and performance enhancement for RV electrical systems. 6" W x 4-1/8" H x 4-7/16"D.
No posts found