A module’s STC power is 300W, with a temperature coefficient of -0.40%/°C. At 65°C, what is the power loss percentage?
A bifacial PV module has a rated power of 350W on the front side and a bifaciality factor of 70%. If the rear side receives 200 W/m² of irradiance, what is the total power output under STC front-side conditions (1000 W/m²)?
A PV system designer is selecting an inverter for a 12 kW array with a maximum power point voltage range of 300-450V DC. Which inverter specification is most critical to verify compatibility?
A connector not listed to be used in a concealed location and being used as a disconnect for PV equipment shall comply with which of the following?
A PV system has a nameplate capacity of 10 kW DC and operates with a total system derate factor of 0.85. What is the expected AC output power under standard test conditions (STC)?
A PV system requires labeling per NEC 690.56. Which of the following must be posted at the point of interconnection?
Which insulation color is allowed for a current-carrying root top dc conductor on a functionally grounded 6kw PV system?
A 10 kW array produces 14,000 kWh annually. What is the specific yield in kWh/kW?
An installer was asked to provide a means to measure the voltage of each battery in a system. The bank is located 50 ft.
From the data logger. The installer will be using shielded. Twisted pairs of instrumentation wiring, all run in the bundle a conduct.
The signals are connected to isolated and ungrounded inputs at a data logger. Which safely precaution is MOST needed to protect the instrumentation wiring?
A rooftop PV system is being installed on a residential building with a 30-degree tilt angle. The modules are oriented directly south in a location where the solar noon altitude on December 21st is 30 degrees. What is the minimum distance required between two rows of modules to avoid shading between 9 AM and 3 PM solar time, assuming the module height is 3 feet?
