November 8, 2012
The Solar ABCs held a webinar to cover the requirements for electrical grounding of photovoltaic (PV) systems, and provided an opportunity to bring questions for a discussion about a final Solar ABCs report entitled “Photovoltaic System Grounding.” The report explains what grounding is and defines different types of grounding. It also describes existing National Electrical Code® (NEC®) grounding requirements in some detail, explains the basics of grounding PV equipment and systems, and notes the U.S. organizations responsible for developing and publishing grounding and safety standards.
In addition, the report discusses grounding requirements for equipment such as microinverters and AC PV modules, and clarifies the differences between PV system and conventional electrical power systems (utility, generator, or battery sourced) grounding requirements. Finally, it includes an explanation of utility and NEC grounding requirements.