When commissioning a PV system, which test is most critical to verify proper operation of the array before connecting to the inverter?
A ground-mount array uses driven piles with a lateral load capacity of 500 lbs. The wind load calculation yields a lateral force of 600 lbs per pile. What must be done?
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 module’s power is 340W at STC. At 700 W/m² and 40°C with a coefficient of -0.38%/°C, what is the output?
A 20 kW system has a measured output of 18 kW at STC. What is the total system loss?
Which of the following is an NEC requirement regarding access for large-scale PV electric power production facilities?
An installer is working on a 1000V DC PV array. What is the minimum PPE required per NFPA 70E for arc flash protection?
A PV system uses 10 AWG USE-2 wire for a 150-foot source circuit run with an Isc of 8A. The terminals are rated at 75°C. What is the ampacity of the conductor after applying NEC temperature and conduit fill adjustments at 35°C?
A PV system equipped with rapid shutdown requires a label stating ‘’RAPID SHUTDOWN SWITCH FOR SOLAR PV SYSTEM’’.
Which is the BEST description of where this label is required?
A 1. 100 ft, 2 ranch home with cathedral callings has a 14 ft. x 41 ft. 8 in , south-facing , composite shingle roof. An engineer has determined that the home’s 2 in, x 6 in. on-center roof rafters are strong enough to gold a solar electric system. The system will have 62.25 in. x 32.50 in. modules with a 1-in gap between modules and a standard twin-rill mounting system number of modules that can fit on the roof on under these conditions?
