Exam 9: Pv System Wiring and the Nec

____________________ is the current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.

Write the common formula used to calculate voltage drop.

If conductors are installed in conduit located outside of a building or underground in a trench, you need to use 90° C, wet rated conductors.

Why is there a need to consider voltage drop when installing long runs of wiring as part of a PV system?

Every circuit must be protected from an electrical current that exceeds the conductor's voltage.

Conductor ampacity must be derated for high ambient temperatures when the ambient temperature around the conductor is higher than the base temperature rating of 30° C (86° F).

When would an installer use Informative Annex C?

There are two types of overcurrent devices used in PV systems: ____________________ and circuit breakers

The conductors between the inverter and the batteries in a stand-alone system, or the conductors between the inverter and the photovoltaic output circuit in a grid-tie system, are referred to as the inverter output circuit.

What type of wire is recommended for use when wiring PV systems?

A junction box typically located at the PV array location where two or more PV source circuits are connected together is called a(n) ____________________ box.

Describe the two exceptions in NEC Section 690.13 that deal with disconnecting grounded connectors.

What is typically used to house source circuit OCPDs in a roof-mount PV array and where is it located?

What two criteria must an installer consider with conductor sizing for a PV system?

A grounded conductor is a system or circuit conductor that is intentionally grounded.

PV system installers must install the correct type of ____________________ for a PV system to be National Electrical Code compliant.

Type NM, Type UF, Type AC, Type MC, and Type USE are all ____________________ types.

Why is conductor insulation color coded in a PV system?

There are two types of grounding in a PV system: ____________________ grounding and equipment grounding.