Briefly describe, in your own words, the difference between the \"System Ground\

Question

Briefly describe, in your own words, the difference between the "System Ground" and the "Equipment Ground. What is the largest size Grounding Electrode Conductor required for any service? What size Grounding Electrode Conductor would be required for 1000A, 277/480V., 3-Phase, 4- Wire Service with (4) sets of#250 kCMIL copper conductors per phase? What size Main Bonding Jumper is required for a 2000A, 120/208V., 3-Phase, 4-Wire service that has (6) sets of 400 kCMIL copper conductors per phase? According to the National Electrical code, how shall the Equipment Grounding Conductor be identified? A particular Branch Circuit is protected by a 100A Circuit Breaker and contains a #8 AWG Equipment Grounding Conductor. If Electrical Metallic Tubing (EMT) is used as the conduit, is it possible to eliminate the #8 AWG EGC? Why or why not? What size copper Equipment Grounding Conductor would be required for a feeder circuit that contains (11) sets of #500 kCMIL copper conductors and is protected by a 4000A/3P circuit peaker?

Explanation / Answer

# System ground - In system grounding we connect the earth to the neutral points of a system. Due to grounding, the extra charges colleected in the system are transferred to the ground. Which protcts us from shock.

# The equipment grounding is different than system grounding. In equipment grounding, the equipments in a system are connected to ground. The metal parts or enclosures of these equipments are connected to ground with the help of a conductor. Which protects one from shock and free charge flowing in the equipments.

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