Sample interview questions: How do you ensure that electrical systems are properly grounded and protected against electrical faults?
Sample answer:
- Proper Grounding Practices:
- Ensure a continuous path from electrical equipment to the earth ground grid using properly sized grounding conductors.
- Inspect and maintain grounding electrodes for proper installation and corrosion-free connections.
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Connect all metal enclosures and raceways to the grounding system with appropriate grounding methods.
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Circuit Protection Devices:
- Install appropriate circuit breakers or fuses with correct amperage ratings to prevent overcurrent conditions.
- Regularly inspect and replace circuit protection devices when necessary.
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Coordinate circuit protection devices to ensure selective tripping, minimizing the impact of faults on the electrical system.
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GFCI and AFCI Protection:
- Install GFCI (Ground Fault Circuit Interrupter) outlets in areas where electrical shock hazards exist, such as kitchens, bathrooms, and outdoor areas.
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Incorporate AFCI (Arc Fault Circuit Interrupter) protection in residential and commercial buildings to prevent electrical fires caused by arcing faults.
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Proper Wiring and Installation:
- Use appropriate wire sizes, types, and insulation, as specifi… Read full answer
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