There are actually five different images in 690.1(b) which the 2017 Code cycle updated. These images are important to examine because they visually help installers understand how to apply Code requirements to different solar PV components and circuits. For example, the image shown below, based on the Code. Rapid shutdown requirements were added to the NECduring the 2014 Code cycle. The intention of rapid shutdown is to protect firefighters from the shock hazards they may encounter when. Outside of the NEC, technicians need to be cognizant of the fire codes their jurisdictions enforce and how PV systems are regulated within those codes. The most common fire codes. PV systems also have structural requirements and codes associated with them. Many jurisdictions use ICC's International Building Code (IBC) and ASCE 7 to guide the structural components of a PV.