North Carolina Home Inspector Practice Exam

Garage doors manufactured after what year must include retention cables through the coil spring?

1. 1970

2. 1978

3. 1985

4. 1990

The correct answer is: 1978

Garage doors manufactured after 1978 are required to include retention cables through the coil spring as a safety feature. This regulation was implemented to enhance the safety of garage doors and prevent potential hazards. The retention cables are designed to contain the spring if it breaks, which can help prevent injury and damage that could occur if the spring was to snap and become airborne. The establishment of this requirement highlights the importance of safety standards in home construction and appliance manufacturing. Prior to this regulation, there may have been higher risks associated with broken springs, but the 1978 mandate sought to address and mitigate those risks, serving as a benchmark for safety in the design of garage doors moving forward.