Sample interview questions: Can you explain the process of grounding and bonding in electrical installations?
Sample answer:
Grounding
Grounding is the intentional electrical connection of a circuit or equipment to the earth or a conductive body that serves as a common reference potential. It provides a low-impedance path for fault currents, static electricity, and lightning, ensuring their safe dissipation.
The process of grounding involves:
- Installing a Grounding Electrode System: This consists of rods, pipes, or plates buried in the earth. These electrodes provide a low-resistance connection to the soil.
- Connecting Ground Conductors (GEC): A grounding conductor connects the grounding electrode system to the electrical panel and all equipment that requires grounding.
Bonding
Bonding is the electrical connection of multiple grounding points together. It creates a continuous, low-impedance path for current to flow between grounded components.
The process of bonding involves:
- Installing Bonding Jumpers: Bonding jumpers are short, bare conductors that connect equipment enclosures, conduits, metal raceways, and other grounded components together.
- Bonding to Grounding Electrode System: The main bon… Read full answer
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