According to the 2015 edition of NFPA 70E, which of the following tasks would require an energized work permit in order to be performed in an energized state?
- Troubleshooting a control circuit for a large industrial machine0
- Thermal imaging preventive maintenance performed on 480V switchgear from a distance of 30"0
- Verification of the absence of voltage in order to establish an electrically safe work conditionYour vote3
- Racking in/out of a 1200A circuit breaker in 480V switchgear4