4 BONDING AND GROUNDING
4.2 Power supply grounding considerations
AC Safety Ground System (mains ground)
The safety ground protects the plant power system, electrical equipment, and personnel from electric shock. All
metal equipment and enclosures are connected to this system through the ground wire. If insulated, the ground
wire color is normally green. The ground wire and neutral wire are connected to the mains ground rods or grid
located where the power enters the building or job area as shown in the following figure. It also describes a
typical AC power source through the mains panel with a safety ground bus and an AC safety (mains) ground
rod.
Termination of any required cable shields
The shield of the cable must be grounded.
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