The NEC690 Building Inspector's Guide is a set of reference materials developed for Building Inspectors and AHJ Officials as it relates to Article 690, of the National Electrical Code (NEC 2014) for Photovoltaic Warning Labels. Key areas of focus include the photovoltaic system disconnecting means, the rapid shutdown switch, and all enclosures containing DC conductors. The 2023 NEC centralizes many multi-source identification requirements in Article 705. MS-900 Self-Adhesive Solar Labels with UV Overlaminate are an excellent choice for photovoltaic labeling. The self-adhesive design. d devices such as night lights, car coolers, and toys. Typically, these run on less than 10V dc and draw only a fraction of an ampere. Learn how to meet NEC standards, understand which solar components require labels, and discover effective labeling solutions for solar equipment. These labels are UV screen printed and UV inkjet printed, the highest quality you will find and designed to last years outdoors in the sun. WARNING THIS EQUIPMENT FED BY MULTIPLE SOURCES. NO USER SERVICEABLE - LABEL NEC.