EXAMINATION 2026 QUESTIONS
WITH ANSWERS GRADED A+
◍ UL 1741.
Answer: Standards for inverters, converters, controller and interconnections
◍ UL 1703.
Answer: Standard for safety, flite plate, Pv modules and panels
◍ 12- 250W modules is how many kilowatts?.
Answer: 3kW (12x250 = 3000W = 3KW)
◍ 5-peak sun hours per day is a measurement of.
Answer: Insolation or irradiation
◍ What PV panels are made from cylindrical silicon ingot.
Answer: monocrystalline
◍ A 10W light is on for 2 days, how much energy?.
Answer: 480Wh or 0.48kWh
◍ Residential Pv systems are limited to no more than 24 two-volt cells
connected in series.
Answer: 48V in total per NEC 690.71
◍ Roof mounted systems are mounted on aluminum or stainless steel rail
secured secured into the roof trusses using.
Answer: Lag Bolts
◍ A temp corrected 10% increase in voltage from 40Voc is.
Answer: 44Voc at cold temperature
◍ Between PV Source Circuit and PV Output Circuit.
, Answer: Combiner Box
◍ Diagnosing a PV problem.
Answer: Stay safe, look at system first, turn things off with disconnects, then
take measurements
◍ BIPV is.
Answer: Building Integrated Photovoltaics
◍ PV monitoring systems.
Answer: consists of a device that measures current and voltage on ac output
of the inveter
◍ Bypass diode location.
Answer: PV module junction box
◍ Bypass diodes mitigate problems with.
Answer: Shading
◍ PV source circuits meets PV output circuits.
Answer: in the combiner box
◍ The point on the IV curve where the MPPT is maximum.
Answer: is at the third point
◍ Current is measured with.
Answer: multimeter with a clamp
◍ ARC flashes inverters are equipped with.
Answer: arc fault detection
◍ Cold module Temp is 40C, Inverter max input is 110V, what is max PV in
series?.
Answer: 2 in series
◍ Concentrated PV works on a cloudy day T or F.
Answer: False, only with direct sunlight
◍ Concentrated PV works with this kind of tracker.
Answer: 2-axis