Proper grounding procedures for a PLC installation specify that:
A)all enclosures, CPU and I/O chassis, and power supplies be connected to a single low-impedance ground.
B)paint or nonconductive materials should be scraped away to provide good ground connections.
C)all ground connections should be made using star washers.
D)all of these.

Question

Quizplus · Accepted Answer

All of these options are important in properly grounding a PLC installation. Connecting all enclosures, CPU and I/O chassis, and power supplies to a single low-impedance ground ensures consistency in grounding throughout the system. Scraping away paint or nonconductive materials provides a better connection point for grounding, and using star washers helps to ensure a strong and reliable connection.

Proper Grounding Procedures for a PLC Installation Specify That