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NABCEP Associate Exam (retake) With Complete Solutions
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NABCEP Associate Exam (retake) With Complete SolutionsUL 1741 - ANSWER Standards for inverters, converters, controller and interconnections
UL 1703 - ANSWER Standard for safety, flite plate, Pv modules and panels
What PV panels are made from cylindrical silicon ingot - ANSWER monocrystalline
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
Diagnosing a PV problem - ANSWER Stay safe, look at system first, turn things off with
disconnects, then take measurements
PV monitoring systems - ANSWER consists of a device that measures current and
voltage on ac output of the inveter
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
, NEC - ANSWER contains which wire to use
OSHA - ANSWER Federal agency that establishes and enforces standards of safety for
the workplace
a restaurant uses 2200WH, 48 V dc, 4.9 PSH, and a Battery efficiency of 90%, what is the
Ah capacity needed? - ANSWER 2200WH/48V = 45.83 AH 45.83AH/.90 = 50.92 50.92/4.9
= 10.39
A restaurant uses 2WH and has 10 kWh in storage what can they operation? - ANSWER
They can operate all operations for days. 10 kWh is a lot of capacity compared to your
usage of 2 wh. First convert 10 kWh to 10,000 Wh which is a lot compared to 2 wh. Refer
to section 7.4.0 of your NCCER book for more detail.
When you lock out a system you need to use - ANSWER engraving
What was a non producing financial incentive for installing pv - ANSWER rebates
PV system warranties are for - ANSWER 25 years
what amps would cause an installer if shocked not be able to let go - ANSWER over
10MA
Inverter warranties - ANSWER are 10 years
Amps are represented by - ANSWER A
What should be done to PV modules to not energize and cause shock to a worker
ANSWER they must be covered and the leads plugged together
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