Advanced Grounding Applications 13. Which article of the National Electrical Code provides the special requirements for electric signs and outline lighting systems regardless of the voltage? A. 250 B. 820 C. 600 D. 770. 14. The equipment grounding conductor of a PV solar system that bonds to the framework of the solar panels must be sized slightly larger than expected, since the A. panels are mounted outdoors and may be prone to corrosion over their lifespan. B. AC inverter system on a utility connected system can backfeed energy into the panels. C. panels may be contacted by metal ladders during service work or during repair of the roofing structure. D. lower output current levels may cause the overcurrent device to take longer to trip.
Advanced Grounding Applications
13. Which article of the National Electrical Code provides the special requirements for electric signs and outline lighting systems regardless of the voltage?
A. 250 B. 820 C. 600 D. 770.
14. The equipment grounding conductor of a PV solar system that bonds to the framework of the solar panels must be sized slightly larger than expected, since the
A. panels are mounted outdoors and may be prone to corrosion over their lifespan.
B. AC inverter system on a utility connected system can backfeed energy into the panels.
C. panels may be contacted by metal ladders during service work or during repair of the roofing structure. D. lower output current levels may cause the overcurrent device to take longer to trip.
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