Exam (elaborations)
Solar Service Technician Questions and Answers 2024
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Solar Service Technician
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Solar Service TechnicianDefine how a residential systems works? - answer The panels convert the energy to DC
current, which flows to an inverter. The inverter converts the electricity from DC to AC,
which you can then use to power your home.
What are troubleshooting steps for a malfunctioning system? - answer1. Check DC
input and out voltage and AC side as well via inverter.
2. Check fuses, breakers, and ground faults.
3. Check home run cables for expected values and open circuit voltage.
4. Check the junction box for water residue or burnt connectors.
5. Check under panels for build up of debris or animal nests
what is the difference between off grid and on grid system? - answerOn-grid system is
one in which the solar power system is connected to the utility's power grid while being
off-grid means the system works independently and the consumer is not connected to
the utility's power system.
What is a panel string? - answerA panel string is a group of panels that are wired into a
single input on your power inverter
what is a mircoinverter? and who uses them? - answerA device used with solar arrays
to convert the energy that is generated (Direct Current) to usable electricity for a home
(Alternating Current). Used by Enphase.
what is a string inverter? - answerA string inverter functions in a series circuit, with there
usually being 6 to 12 individual solar panels in what is known as a "series string." SMA
is a leading manufacturer of string inverters.
what is an optimizer? - answerA solar power optimizer is a module-level power
electronic that optimizes power output and increases efficiency. Used by Solaredge.
What are common gateway issues? - answerPoF include not being connected close
enough router, plugged into a power, or inverter firmware has not been updated.
How many flights and how many photos should be taken during a site survey? -
answerA minimum of 100 photos and 3 flights ranging in distance and height.
During a site survey what are photos must be taken? - answerPhotos should consist of
main breaker rating, main panel with close up of interior, any obstructions, material of
roofing, and surrounding area.
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