Enphase Micro inverters , AHJ wants us to drive 2 ground rods because the concrete encased electrode is not accessible, we can see GEC in MSP but have no access to garage, client is out of town. When we used to install transformer inverters we would always drive ground rods if we could not locate existing GEC, now that we do TL inverters we stoped locating GEC , stoped driving ground rods. Is it code to have the GEC accessible , verified rather it's a TL or transformer inverter, (note) no service change