A generator is being installed in a commercial building to provide emergency power. According to 2026 NEC Article 700.4, what is the minimum frequency of maintenance inspections required for the generator?
- AMonthly
- BQuarterly
- Annually
- DBiannually
Exam tip
Remember the frequency of maintenance inspections for emergency generators is specified in NEC Article 700.4.
Why C is correct
2026 NEC Article 700.4 requires that emergency generators be inspected and tested at least annually to ensure they are in proper operating condition. This is to ensure the generator will function as intended during an emergency.