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NABCEP PV Installation Professional (PVIP) Board Certification Sample Questions:

1. Aerial lifts used to hoist equipment and PV modules to roof levels may be field modified for uses other than those intended by the manufacturer with which approval or certification?

A) Tested and approval by the distributor of the equipment
B) Approval by the local AHJ for meeting safely regulations
C) Certified via the state material handling safely statutes
D) Certified in writing by the manufacturer or an NRTL

2. 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) 10.6 kW
B) 11.0 kW
C) 10.0 kW
D) 11.2 kW

3. A 7KW/ 14 KWh multimode system has been installed at a residence, ac-couple with the customer's existing
6.7kwh ac PV system. The system providers uninterrupted power to a protect loads subpanel, which is connected to a refrigerator, Microwave, 1.0 ton are conditioner, three lightning circuit, and the 6.7kwac PV system. One month later, the homeowner moves additional circuits to the protected loads subpanel, substantially increasing the loads. Why would this cause, the backfed interconnection breaker in the main service panel to trip?

A) The load «the protected loads subpanel exceeds the PV system ac rating by 25%.
B) The total load exceeds the system's energy storage capacity of 14kWh.
C) The main service panel is no longer compliant with NCC 705.12.
D) The toad exceeds the capacity of the interconnection breaker.

4. 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) 45A
B) 35A
C) 30A
D) 40A

5. A project is using a PV module with a 25-38dc maximum power voltage range and a single input inverter with an operating windows of 250vdc-450dc. The dwelling the system is to be installed on has a 5:12 roof with a southeastem face that can accommodate 14 modules and southwestern face that can accommodate 10 modules. What is the MAXIMUM number of modules that can be installed for proper inverter maximum power point tracking?

A) 24
B) 14
C) 20
D) 18

Solutions: