Description: Enhance safety with the Photovoltaic System Combiner Panel Warning Label, designed for clear visibility and quick understanding. This 4" x 2" label warns of potential hazards, ensuring compliance with NEC standards for all installation years from 2011 to 2023. Features: Size: 4" x 2" Applicability: For all NEC standards Compliance: Suitable for projects from 2011 to 2023