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

1. A PV system is located at 41 N latitude. The sun angle is 23 on December 21 at solar noon. Assuming that the
65 ft tree is directly south of the PV array and will grow 20 ft. over the life of the PV system, what is the MNIMUM distance the tree to the button of the prevent shading?

A) 153 ft.
B) 201 ft.
C) 98 ft.
D) 167 ft.

2. Most electric service providers require interactive PV equipment to comply with which for interconnection to their distribution grid?

A) UL 1741
B) UL 2703
C) UL 60947-1
D) UL 16998

3. An 8KWsc roof-mounted array is placed on a school building. The inverter is located within 1 ft, of the array boundary and has an integrated ac-and dc-disconnecting switch. The system is to be connected to a 400A load center, protected by a 400A main breaker. Which of the following MUST be included to meet NEC requirements?

A) A rapid shutdown initiationdevice operating contractor within 1 ft, of the array to de-energize the dc subarrays
B) An ac-disconnect label with the location of the rooftop dc-disconnect switch.
C) A readily accessible dc disconnect with rapid shutdown initiation device permanently labeled
D) A readily accessible ac-disconnecting switch, who location is identified on the system directory

4. A grounding electrode is required at the location of all ground-mounted and pole-mounted PV arrays. Which typeof grounding electrode is NOT permitted for arrays. Which type of the grounding electrode is NOT permitted for array grounding?

A) Aluminum structural member in direct contact with the earth for 10ft, or more
B) Metal underground water pipe in direct contact with the earth for 10 ft. or more.
C) Concrete-encased 4 AWG copper conductor at least 20 ft, in length
D) Metal frame of a building or structure in direct with the earth for 10 ft. or more.

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) 14
B) 18
C) 24
D) 20

Solutions: