Harmonics Limited, Inc. manufactures a Harmonic Suppression System (HSS) which is pantented technology that prevents the generation of 3rd harmonic currents by non-linear electronic equipment in a building's power distribution system. The existence of 3rd harmonic current limits available system capacity, causes excess heating on transformers and system components and wastes significant amounts of energy reducing system quality and reliability while increasing operating cost. HL's HSS works at the source to prevent the generation of these currents.