A PV system has a 1000V DC array feeding a transformerless inverter. What is the minimum insulation rating for the DC conductors per NEC 690.35?
A PV array is installed with a rapid shutdown system per NEC 690.12. The array is 15 feet from the service entrance. What is the maximum voltage allowed within the array boundary 30 seconds after shutdown initiation?
According to the NEC, if the PV system disconnect and the building service disconnect are at different locations, there MUST be a/an:
A PV module has a NOCT of 47°C. At 1000 W/m² and 35°C ambient, what is the cell temperature?
Which of the following MUST be referenced for determining a site’s design wind speed?
A module’s Isc is 9A at STC. At 600 W/m² irradiance, what is the expected Isc?
A PV module is mounted with a 2-inch standoff from a shingle roof. What is the minimum clearance required for fire access per the International Fire Code (IFC)?
A worker is installing modules on a roof 20 feet above grade. What OSHA fall protection is required?
A grounding electrode is required at the location of all ground-mounted and pole-mounted PV arrays. Which type of grounding electrode is NOT permitted for arrays. Which type of the grounding electrode is NOT permitted for array grounding?
A site has a known magnetic declination of 14 west. What should the corrected azimuth reading of the array be in order to be facing true south?
