A technician has been called to a scale due to a low-performing array. The technician will perform tests in the
24-source circuit combiner box. After putting on the correct PPE and turning off and performing lock.tagout of the inverted and combiner disconnect. Which is the next step to safely begin electrical testing in the combiner box?

Per NEC 690.8, a PV source circuit has an Isc of 9.5A. What is the minimum ampacity required for the conductor?

A PV system combiner box contains six source circuits, each with an Isc of 8A. The output conductor is 6 AWG THWN-2 copper rated at 90°C. What is the maximum allowable OCPD rating per NEC?

A PV system's capacity factor is 18%. The array is 10 kW, and it operates 365 days/year. What is the annual energy output?

A maintenance inspection reveals cracked module glass. What is the immediate action?