A tap conduct is to be connected to a feeder supplied by both a utility service source and a utility-interactive inverter source. The feeder utility source is a 400A breaker in a service panel, the inverter overcurrent protection device is rated at 100A, and the inverter continuous output current is 72. The tap conductor that is to be installed will be 17 ft. long. It will be located in a raceway and will supply a subpanel with a 50A main breaker.
What is the MINIMUM required ampacity of the tap conductor?
The following dc portion of a PV schematic (functionally grounded conductor not shown) is submitted to the building official for permit approval. The building official, who also is he AHJ, allow the system to be installed by requiring what NEC-required MINIMUM size equipment grounding conductor at Location A?
On a PV system larger than 100kw, which PV array design will provide the HIGHEST degree of performance monitoring.
Granularity, and ease of troubleshooting performance issues?
Multiple-string inverter system with monitored dc-to-dc converters located at each moduleB.
Multiple-string inverter system with data acquisition system located at each dc combinerC.
Central inverter with data acquisition system located at the inverter.D.
Multiple-string inverter system with data acquisition system located at each inverter.
A PV technician is installing a 6.5KWac inverter using a 40A backfed breaker. The single line shows a 200A panelboard with a 200A breaker, but the installer finds that the panelbord actually has a 150A main breaker.
Which of the following is the CORRECT installation option?
Complete the installation as noted above.B.
Install a 30A backfed circuit breaker.C.
Change the main circuit breaker to a 200A unit.D.
Replace the 200A panel with a 150A panel.
Which of the following requires a UL listing or its equivalent?
Grounding electrode clampC.
System labels and markingsD.