ICC Residential Electrical Inspectors Practice Exam

Which type of heating equipment does the lock requirement apply to?

1. all types of electric heaters

2. heating equipment with motors rated over 1/8 hp

3. residential heating systems

4. fixed heating equipment

The correct answer is: heating equipment with motors rated over 1/8 hp

The lock requirement specifically applies to heating equipment with motors rated over 1/8 horsepower. This regulation ensures that any significant electrical equipment, particularly those that have larger motors, are secured to prevent unauthorized or accidental operation, which could lead to safety hazards or electrical failures. In residential settings, equipment with motors rated above that threshold typically has a higher capacity and is more likely to require specific safety measures to protect both the equipment and the occupants. Ensuring that these motors are properly secured aligns with best practices in electrical safety, reducing risks associated with unintended usage or maintenance actions. Other types of equipment, such as all electric heaters, residential heating systems, or fixed heating equipment might not universally have the same requirements since they may not involve motors rated above that threshold, or they may not present the same level of risk. The focus here is specifically on the power capacity of the motors, thus reinforcing the importance of this requirement for the specified category of heating equipment.