PVIP NABCEP PV Installation Professional (PVIP) Board Certification Free Practice Exam Questions (2025 Updated)
Prepare effectively for your NABCEP PVIP PV Installation Professional (PVIP) Board Certification certification with our extensive collection of free, high-quality practice questions. Each question is designed to mirror the actual exam format and objectives, complete with comprehensive answers and detailed explanations. Our materials are regularly updated for 2025, ensuring you have the most current resources to build confidence and succeed on your first attempt.
Which of the following voltages should be included on the dc disconnected label to indicate MAXIMUM system voltage?
Which of the following tests measures axial uplift when performing load testing of driven-pile foundation members
A 12 kW array has a measured output of 10 kW at STC due to mismatch losses. What is the mismatch loss percentage?
With all other environmental parameters being the same, which would be the expected reduction in KM performance of a PV system after an irradiance drop from 810w/m2 to 740w/m2?
A site survey indicates a residential roof with a 4:12 pitch facing 20° east of south. The local latitude is 35°N, and the optimal tilt for maximum annual production is equal to latitude. What adjustment should be made to compensate for the roof’s orientation and tilt to achieve near-optimal output?
A module’s Isc is 9A at STC. At 600 W/m² irradiance, what is the expected Isc?
A PV system installation utilizes micro inverters connected to each module of the array. Each micro inverter has a nominal rated output of 250WV. Single phase. The microinverters are listed so that multiple inverters may be connected in parallel to a single feeder circuit, and each inverter has an cable and connector rated for 30A. What is the MAXIMUM number of inverters that may be wired together on a single 30A feeder circuit?
A microinverter system uses 30 modules, each rated at 320W, with an inverter efficiency of 96%. The AC output is connected to a 208V three-phase service. What is the total three-phase power output?
Which load path connections need to be analyzed when determining live and dead loads on a PV array system installed directly to a metal seam roof?
A rooftop PV array has conductors running through a conduit exposed to sunlight on a roof with an ambient temperature of 40°C. The conduit is 2 inches above the roof surface. What is the NEC temperature adjustment factor for 90°C-rated conductors?
A 20 kW array has a measured output of 16 kW at 800 W/m² irradiance. What is the performance loss due to irradiance?
A system’s inverter output is 9 kW at 900 W/m² irradiance. What is the expected output at 1000 W/m²?
A PV array’s output drops by 8% due to shading from 10 AM to 2 PM. If unshaded output is 12 kW, what is the shaded output?
A PV connection is being made at the center of a 300 ft. long 200 feeder. See the attack diagram. The feeder originates in the upper third of the 800A main service panel (800A main breaker) with a 200A breaker and terminates in a 200A main-lug-only subpanel. The rated output of the PV system inverter is 100A.
Which are the NIMUMUM actions required to achieve an NEC-compliant installation?
Which insulation color is allowed for a current-carrying root top dc conductor on a functionally grounded 6kw PV system?
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?
A 5 kW system has a PR of 0.80 and operates at 4.5 PSH. What is the monthly energy output?
An installer has decided to use 31 in. long. 3.1/2 in diameter conical ground screws as the footings for a 3.840W solar electric system. Access to he is too difficult to pour concrete footings. The soll is classified as sandy loam. The design wind speed is 90 mph with an uplift force of 32 ibs/ft2. What is the MINIMUM number of screw required to resist uplift loads?
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 15 kW system has a total derate factor of 0.90. After 5 years, output drops by 2% annually due to degradation. What is the AC output in year 5?
