Gregory P. Bierals is the president and Technical Director of Electrical Design Institute. He has presented technical seminar programs on the topics of the national electrical code, designing overcurrent protection, grounding electrical distribution systems, electrical systems in hazardous (classified) locations, and grounding solar photovoltaic systems. These courses have been offered throughout the United States and abroad since 1978. His published books include The NEC and You, Perfect Together, Grounding Electrical Distribution Systems, Designing Overcurrent Protection, NEC Article 240 and Beyond and Grounding and Bonding Photovoltaic and Energy Storage Systems.