Pre-Printed Labels for Solar Energy Panduit Pre-Printed Labels for Solar Energy allow users to identify hazardous energy sources quickly and efficiently in photovoltaic applications and environments. These labels include a line of frequently used pre-printed labels for utility-scale and commercial solar applications. The pre-printed labels are designed to comply with the 2020 National Electric Code and help to ensure a safe working environment. These labels support quick and easy installation and identification of electrical panels, enclosures, and conduits in photovoltaic applications. These labels are available in various sizes and styles and cover a wide range of photovoltaic applications, including combiner boxes, inverters, and Photovoltaic (PV) wire and cable. Reflective material provides high visibility to aid first responders. All labels are outdoor rated and constructed with UV-resistant material for long-term reliability, subjected to high ultraviolet exposure.