Exam 12: Maintaining and Troubleshooting a Pv System

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

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.

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

What can be used to clean PV modules?

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

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

What are the three most common PV system failures?

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

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

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

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

____________________ 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.

How does the final systems check begin?

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

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

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

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

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

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

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