What Do the Lights Mean on My Solar Inverter? Different lights signify varying states of operation. For a master or journeyman electrician, correctly applying these labels is crucial for passing inspection and ensuring the long-term safety of first responders and maintenance personnel. Users can read this display by first identifying the various symbols and numbers, which represent different metrics of the solar system's performance. The first number. . 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. The Guide also covers ANSI Z535. The LCD screen will illuminate and begin displaying information.
[PDF Version]
