PV Installation Professional (PVIP) Board Certification (PVIP) Practice Test

Questions # 41:

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?

Options:

11.5 kW

12.2 kW

12.9 kW

13.5 kW

Questions # 42:

A PV system is installed in a location with an average annual ambient temperature of 30°C. If the module’s NOCT (Nominal Operating Cell Temperature) is 45°C, what is the expected cell temperature under standard operating conditions (800 W/m² irradiance)?

Options:

45°C

50°C

55°C

60°C

Questions # 43:

When installing an ungrounded PV system with an open-circuit voltage of 450Vdc and a maximum voltage of 3000Vdc which procedures should be followed to establish an electrically safe condition?

Options:

Determine possible sources electrical supply an avoid exposure to energized conductors or parts.

Apply lockout/tagout devices and install a listed isolation transformer.

Mount inverters on nonconductive supports and temporarily ground one dc circuit conductor.

Verify that disconnecting device blades are closed and test conductors using an adequately rated detector.

Questions # 44:

A designer is selecting a charge controller for an off-grid system with a 6 kW PV array and a 48V battery bank. The array Isc is 130A. What is the minimum current rating for the charge controller?

Options:

130A

150A

162.5A

175A

Questions # 45:

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

Options:

Concrete-encased 4 AWG copper conductor at least 20 ft, in length

Aluminum structural member in direct contact with the earth for 10ft, or more

Metal underground water pipe in direct contact with the earth for 10 ft. or more.

Metal frame of a building or structure in direct with the earth for 10 ft. or more.

Questions # 46:

A connector not listed to be used in a concealed location and being used as a disconnect for PV equipment shall comply with which of the following?

Options:

The connector shall have a non-polarized configuration.

The connector shall be installed so as to guard against inadvertent with live parts by persons.

The grounding member shall be last to make and first to break contact with the mating connector

The grounding member shall be interconnectchangeable with receptacles in other electrical systems.

Questions # 47:

An installer is using ½ in lag boits to secure roof-monitoring hardware to rafters through a roof deck. Which of the following should the installer predrill?

Options:

A pilot hole one-half the length of the bolt

A pilot hole one-fourth the length of the bolt

A 1/8 in, pilot hole through the roof into the rafter

A 5/16 in pilot hole through the roof into the rafter

Questions # 48:

A string inverter fails to start in the morning. The DC input voltage is 200V, below the minimum start voltage of 250V. What should be checked first?

Options:

Inverter firmware

String sizing

Module temperature

AC breaker position

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