Can you explain your knowledge of electrical system grounding techniques and requirements?

Sample interview questions: Can you explain your knowledge of electrical system grounding techniques and requirements?

Sample answer:

Electrical System Grounding Techniques and Requirements

Bonding

• Connecting non-current-carrying metal parts of an electrical system to establish a common potential.
• Ensures that all exposed surfaces, such as enclosures, frames, and conduit, are electrically connected to the ground.

Equipment Grounding

• Establishing a path for fault current to flow from equipment enclosures to the grounding electrode system.
• Typically achieved through equipment grounding conductors (EGCs) connected to the main grounding electrode.

System Grounding

• Providing a reference point for the electrical system and stabilizing the voltage.
• Can be achieved through various methods, including:
  • Solidly grounded: The neutral point is directly connected to the grounding electrode system.
  • Resistance grounded: The neutral point is connected to the grounding electrode system through a resistance.
  • Impedance grounded: The neutral point is connected to the grounding electrode system through an impedance.

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