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Exam 12: Maintaining and Troubleshooting a Pv System

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Question 1

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____________________ maintenance should involve checking all mechanical and electrical connections, checking all source circuit currents and voltages, checking battery electrolyte if the batteries are not sealed, and checking the programming of charge controllers and/or inverters.

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When will representatives of the Authority Having Jurisdiction (AHJ) inspect the PV system?

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Representatives of the AHJ wil...

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Question 3

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What should you record once it has been determined that the PV system is working properly, and why?

A maintenance ____________________ is a list of maintenance tasks and their suggested time interval.

The organization, office, or individual designated by the local government with legal powers to administer, interpret, and enforce building codes is called the _____________________.

Commissioning is the initial start-up and operation of a PV system.

What can be used to clean PV modules?

A check needs to be performed of all junction boxes, conduit bodies, and disconnect switches to make sure they are ____________________ and suitable for outside installations.

What is the first task when performing the initial system startup?

When troubleshooting a PV array, if no problem is found at the array or inverter you'll need to check the building's electrical ____________________.

When troubleshooting an array, first ____________________ check the entire system for any obvious damage.

____________________ is a systematic investigation of possible causes for a system problem resulting in a determination of how best to fix the problem.

How often should you inspect the intake air duct and cooling fan of an inverter for accumulation of dirt and debris?

The last item to check when performing the final check is signage.

Conductor insulation on PV systems should be rated for wet locations.

What are the three most common PV system failures?

The electrical inspector will make sure that the building codes adopted by the local government are being followed.

A(n) ____________________ is used to check the specific gravity of the electrolyte in battery cells.

How does the final systems check begin?

Stand-alone PV systems will require less maintenance than grid-tie systems.