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NABCEP TESTING QUESTIONS AND 100% CORRECT ANSWERS
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NABCEP TESTING QUESTIONS AND 100%CORRECT ANSWERS
30 degrees - ANSWER If an array is facing south at equinox at noon what must the tilt
angle be in order for the array to face directly at the sun at latitude 30?
Ability of the wire to withstand fire - ANSWER The temperature rating of the insulation of
a conductor when designing a PV system effects the?
Voltage - ANSWER When a bypass diode kicks in from a leaf on a solar cell, which would
you see reduced on a single string with level MPPT?
704v and 8.66A - ANSWER For the following provided for a PV module, what would the
output be, under Standard Test Conditions if the inverter and PV were operating
perfectly and delivering power to the grid? 20 in series, 1PV source circuit, Voc=44v,
Vmp=35.2v, Power=305w, Isc=9.27A
Clamp on Ammeter - ANSWER What is the best and safest means of determining current
in a PV output circuit?
3.9 kwh - ANSWER A remote cabin uses the following loads per day, how much total
energy is used per day? 1000w toaster for 6 minutes, 1.2kw hot water heating element
for 3 hours per day, Three 17w LED lights for 3 hours per day, iphone 100 charger at
20w for 3 hours per day.
Attachment to a roof where there is no rafter - ANSWER What is "blocking" used for?
Lockout Tagout - ANSWER If you are going to work on the roof to fix a ground fault and
the DC disconnect is on the ground level, which of the following is the best safety
procedure?
, OSHA - ANSWER Who makes requirements for electrical safety for employees?
Export to the utility extra power for credit - ANSWER typical utility interactive systems in
the US will?
15,330 kwh - ANSWER A Pv system that would produce 7kwac under STC conditions,
which is not clipping power is installed in a location with an average of 6Psh would
produce how much energy in one year?
Fire safety - ANSWER Pv modules are tested for many things by CSA to the UL 1703
standard including?
New resistance heater - ANSWER If doing an energy audit, which device is the best to
replace to conserve energy?
Make sure that connectors are open - ANSWER When on a roof in sunlight handling Pv
modules, what is the most common method of safety in the following
More than one orientations within a PV source circuit - ANSWER What would you
consider to be the worst design flaw if an inexperienced person is designing a Pv
system?
Doping - ANSWER Part of the process of turning silicon into a solar cell is called?
Lag screws into rafters or purlins - ANSWER How are the residential rooftop mounting
systems usually attached to a rooftop, so that they do not fly away when the wind is
blowing?
Square with rounded corners - ANSWER What is the shape of a typical mono-crystalline
solar wafer?
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