What is required for a PV system according to section 690.8?

A PV system must have a means of disconnect that is readily accessible, as outlined in section 690.8 of the National Electrical Code (NEC). This requirement ensures that the system can be safely and quickly de-energized by emergency responders or maintenance personnel in case of an emergency, such as a fire or equipment failure. The disconnecting means enhances safety by allowing for the isolation of the photovoltaic system from the electrical system, thereby preventing accidental electrical shock or equipment damage during maintenance or repair work.

While other options may incorporate valuable features, they do not encapsulate the specific code requirements set forth in section 690.8. The requirement for an automatic shut-off feature, battery backup, or installation by a licensed electrician may be relevant in certain scenarios or best practices, but they do not constitute a mandatory provision under that specific code section. Thus, the emphasis on a readily accessible disconnect reflects the central concern for safety in the installation and use of photovoltaic systems.