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I had a few questions about grounding and bonding related to a single EG4 3000 inverter mostly stationary system. For context, I have a grid-connected cabin, and I am using one inverter and battery mounted on a cart powering a few things inside the cabin. Occasionally I'll want to move it...

NEC 2023, 690.41 (B) states: I'm curious from a safety point of view why the NEC says it's fine to not have ground fault protection for ground-mounted string array. Why would adding an earth ground to single string PV system somehow make the system safe from ground faults? Is there something...

Is ground fault protection required on the battery mounts (like it is for many systems on the PV side)? If not, why not? Thanks!