This guide is a strict, step-by-step approach to the installation of solar inverters, which are in accordance with the electrical standards and guaranteeing optimal performance of the entire solar energy system.
The key rule involves the neutral-to-ground bond: Only one bond point avoids parallel paths and GFCI issues. The inverter becomes the source and must set a stable reference. Adding a battery complicates grounding.
Turn off the AC disconnect, shut down the inverter, turn off the DC disconnect, wait 5 minutes for capacitor discharge, then cover panels with opaque material.
Your inverter does not appear to supply it (smaller inverter-only units often don't). You will probably measure significant AC voltage between G and N at the inverter.
Solar PV system protection uses DC circuit breakers, fuses, and surge protect devices (SPDs) to prevent electrical faults and lightning surges. These devices safeguard inverters, panels, and cables, ensuring long-term reliability, system efficiency, and compliance with IEC.