NEIEP Mechanics Practice Exam

What term best describes connecting all metal parts at ground potential to minimize electrical shock hazards?

1. Grounding

2. Insulation

3. Bonding

4. Shielding

The correct answer is: Bonding

The term that best describes the practice of connecting all metal parts at ground potential to minimize electrical shock hazards is bonding. Bonding involves establishing a low-resistance electrical connection between conductive parts, ensuring that they are at the same electrical potential. This is crucial in reducing the risk of electrical shock since it minimizes the voltage difference that a person could potentially encounter if they were to touch two parts. Grounding, while related, refers specifically to connecting electrical systems to the earth to provide a safe path for fault currents. Insulation is the use of non-conductive materials to prevent electrical current from escaping or entering conductive parts. Shielding involves using materials to block electromagnetic fields and protect sensitive equipment from interference. Each of these terms has distinct meanings and applications in electrical safety and system design. Understanding these distinctions clarifies the importance of bonding as a safety measure in preventing electrical shocks.