Residential Building Inspector B1Building Planning and Life SafetyEasy
A residential building inspector is reviewing plans for a new single-family dwelling. The plans indicate the installation of a permanently installed generator. What is the minimum required distance the generator must be located from any opening in the dwelling?
- A1 foot (305 mm)
- B5 feet (1524 mm)
- C3 feet (914 mm)
- D7 feet (2134 mm)
Show answer & explanationAnswer & explanation
Correct answer: C. 3 feet (914 mm)
Generators, due to potential exhaust fumes, must be located a minimum distance from openings to prevent harmful gases from entering the dwelling. The IRC specifies this minimum separation distance.
Why the other options are wrong
- A. This distance is insufficient for safety from exhaust fumes.
- B. While a safer distance, it is not the minimum required by code.
- D. This distance exceeds the minimum code requirement.
Generator Separation from Openings
Permanently installed generators must be located a minimum distance from dwelling openings to prevent the entry of exhaust fumes.
- Applies to permanently installed generators.
- Protects against carbon monoxide and other exhaust gases.
- Measurement is from the generator to the nearest opening.
Memory trick: Generator fumes need three feet of freedom from your home's breath.