Open-Circuit Voltage (Voc) : The maximum possible voltage across a photovoltaic cell or module; the voltage across the cell in sunlight when no current is flowing
US Department of Labor, Electric Power eTool: Glossary of Terms, Occupational Safety & Health Administration OSHA, Washington, D.C., USA 2010. https://www.osha.gov/SLTC/etools/electric_power/gl ossary.html, (OSHA/ Electr Pwr - Amer) {618}