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Elizabeth HarrisJul 26, 2025
How to check for ground fault on SMA SUNNY BOY 5000TL PV generator?
- BBrent CoxJul 27, 2025
To troubleshoot a ground fault on your SMA Inverter's PV generator, it's likely due to a ground fault within the PV generator itself. You should check the strings for ground faults by measuring the voltages between the positive and negative poles of each string against the ground potential. If voltage is present, a ground fault exists in that string. Remember, do not touch the frame of the PV generator and do not connect strings with ground faults to the SMA Inverter. Wait until no voltage can be measured before proceeding.