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NABCEP PVIP Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| System Commissioning | 17% | - Functional testing
- Pre-commissioning verification
|
| System Design | 32% | - Site assessment and analysis
|
| Operations & Maintenance | 13% | - Preventive maintenance procedures - Troubleshooting and fault diagnosis - Safety and maintenance documentation - System performance monitoring and reporting |
| Installation | 38% | - Safety practices
|
NABCEP PV Installation Professional (PVIP) Board Certification Sample Questions:
During a site assessment, an installer identifies a 100-foot-tall tree 150 feet south of a proposed PVarray. The site latitude is 40°N. Will this tree cause shading on December 21st between 9 AM and 3 PM solar time?
- A. Yes, shading will occur all day
- B. Yes, shading will occur before 10 AM only
- C. Insufficient data to determine
- D. No, shading will not occur
Correct Answer: D 🗳️
A PV system is designed with a 48V battery bank and a 5 kW inverter. The load requires 20 kWh/day, and the system must have 2 days of autonomy with a maximum depth of discharge (DoD) of 50%. What is the minimum battery capacity required in Ah?
- A. 417 Ah
- B. 833 Ah
- C. 1000 Ah
- D. 1667 Ah
Correct Answer: B 🗳️
A grid-tied PV system uses a transformerless inverter with a maximum DC input of 1000V. The array consists of 20 modules, each with a Voc of 45V. What is the NEC 690.7 correction factor for a low temperature of -15° C if the temperature coefficient is -0.30%/°C?
- A. 1.15
- B. 1.12
- C. 1.21
- D. 1.18
Correct Answer: D 🗳️
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. Rotate modules 20° west to face true south
- B. No adjustment needed; output loss is negligible
- C. Increase array capacity by 5%
- D. Install adjustable racking to match 35° tilt
Correct Answer: D 🗳️
While surveying a potential three-phase project, an installer measures the voltage at the point of utility interconnection. The results are as follows:
* Phase to phase: 240V
* Phase A neutral: 120V
* Phase B neutral: 208V
* Phase C neutral: 120V
Which is a likely cause of these reading?
- A. Supply-side ground fault
- B. High-leg transformer configuration
- C. Phase-to-phase power imbalances
- D. Missing ground in the transformer
Correct Answer: B 🗳️
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