A PV inverter AC disconnect is open while sunlight reaches the array. What must the worker assume about source-circuit conductors?
- AThey become equipment-grounding conductors
- PV conductors can remain energized
- CThey are safe to short with unrated tools
- DThey are de-energized because AC is open
Why B is correct
PV modules produce DC whenever illuminated. Opening the AC side or stopping the inverter does not necessarily remove source-circuit voltage, so identification, disconnecting, test, and PPE procedures must address both sources.