Summer Sale Limited Time 65% Discount Offer - Ends in 0d 00h 00m 00s - Coupon code: ecus65

NABCEP PVIP - PV Installation Professional (PVIP) Board Certification

NABCEP PVIP Premium Access     Download Demo    
Page: 1 / 5
Total 70 questions

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?

A.

11.5 kW

B.

12.2 kW

C.

12.9 kW

D.

13.5 kW

A bifacial array gains 15% additional power from rear-side irradiance. If the front-side output is 10 kW, what is the total output?

A.

11.0 kW

B.

11.5 kW

C.

12.0 kW

D.

12.5 kW

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 main service panel is no longer compliant with NCC 705.12.

B.

The load «the protected loads subpanel exceeds the PV system ac rating by 25%.

C.

The toad exceeds the capacity of the interconnection breaker.

D.

The total load exceeds the system's energy storage capacity of 14kWh.

A PV system is designed for a location with a peak sun hours (PSH) value of 4.5. The daily load is 18 kWh, and the system efficiency is 80%. What is the minimum array size required in kW?

A.

4.0 kW

B.

5.0 kW

C.

6.0 kW

D.

7.5 kW

A PV array’s tilt is 30° at a latitude of 40°N. What is the winter energy loss compared to optimal tilt?

A.

5-10%

B.

10-15%

C.

15-20%

D.

20-25%

A 10 kW system has a total derate factor of 0.85 and operates at 5 PSH. What is the daily output in summer with 10% soiling loss?

A.

36.0 kWh

B.

38.25 kWh

C.

42.5 kWh

D.

47.5 kWh

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.

10.0 kW

B.

10.6 kW

C.

11.0 kW

D.

11.2 kW

A homeowner is weighing the PV module options for a roof-mounted solar array. Which is a correct option to present to the homeowner?

A.

Building-integrated PV shingles will be flush or nearly flush with other shingles, but the electrical energy produced will be less than polycrystalline or monocrystalline modules.

B.

Rapid shutdown requirements within 1 ft of the array boundary.

C.

Polycrystalline modules are more shade-tolerance than either amorphous or monocrystalline modules and allow a larger array to be installed, including in area where shading could be seasonally problematic.

D.

Microinverters can be installed with either polycrystalline or monocrystalline modules, negating the need for rapid shutdown compliance.

A PV system was installed in July 2017 under the 2017 NEC. The system has a string inverter located inside a garage on a wall 10 ft, from the outside wall and 1oft, from the ac load center at the point of utility connection. The PV system has a PV array on the roof. Which of the following represents the PV rapid shutdown system requirement for the controlled PV system conductors associated with this PV array?

A.

Within the array boundary and more than 3.ft from the point of entry of the building.

B.

More than 1 ft, from the PV array or more than 3 ft, from the point of entry of the building.

C.

More than 1 ft, from the VP array and more than 5 ft. In length the building.

D.

More than 10ft, from the PV array or more than 5 ft. in length inside the building

A PV system includes a 600V DC disconnect with a fault current rating of 10 kA. The available fault current from the inverter is 12 kA. What must be done to comply with NEC 110.10?

A.

Install a current-limiting fuse upstream

B.

Replace the disconnect with a 15 kA-rated unit

C.

Reduce the array size to lower fault current

D.

No action needed; the rating is sufficient