最新のPVIP問題集で試験を準備する

Inspection of a new PV installation shows that the dwelling uses a galvanized water pipe for its grounding electrode and that the PV system now shares the connection. Which of the following is an acceptable supplemental electrode method to ensure the integrity of having a grounding electrode?

• A. Connecting the water pipe to the service entrance panel metal structure
• B. Connection the service panel to a copper-clad steel ground rod near the panel
• C. Connecting the water pipe to a gas pipe that is known to be solidly grounded
• D. Connecting the service panel to an auxiliary ground used by a lightning protection system

A ground resistance measurement on a newly installed grounding electrode indicates a resistance of 130#. The earth connection may be improved by connecting the existing electrode to a:

• A. Supplement ¼ in, in thick aluminum plate electrode buried 30 in. down and located 7 ft, away.
• B. Supplemental copper plated steel grounding electrode located 8 ft, away.
• C. Supplemental grounding electrode located 5 ft, away.
• D. Buried water piping system using 40 ft. of 2 in. PVC piping located 10 ft awat.

According to the NEC, where on a residential PV system MUST the labeling describing the type of rapid shutdown be located?

• A. On the rapid shutdown initiation device.
• B. At point on the residence designated by the AKJ and fire marshal
• C. On or no more than 1 m (3. 3 ft) from the service disconnecting meant
• D. A close as practicable to the PV array requiring rapid shutdown

Per NEC 690.8, a PV source circuit has an Isc of 9.5A. What is the minimum ampacity required for the conductor?

• A. 11.875A
• B. 15.0A
• C. 9.5A
• D. 14.25A

A PV system is installed in a location with an average annual ambient temperature of 30°C. If the module's NOCT (Nominal Operating Cell Temperature) is 45°C, what is the expected cell temperature under standard operating conditions (800 W/m² irradiance)?

• A. 45°C
• B. 50°C
• C. 60°C
• D. 55°C