NFPA 70E FINAL QUESTIONS AND ANSWERS
True or False: A mandatory rule can have exceptions. - Answers -False
de-energized - Answers -all electrical energy has been removed
incident energy - Answers -Energy lost in an arc flash
how do we calculate incident energy - Answers -Cal/cm^2
shock hazard - Answers -Anything that can cause injury or death due to shock
Disconnect Switch - Answers -A switch designed to disconnect electrical power from a
circuit or electrical equipment
True or False: Permissive rules are allowed but not required to be performed - Answers
-true
What does NEC stand for? - Answers -National Electrical Code
What do chapters 1-4 of the NEC cover - Answers -General electric installations
What do chapters 5-7 of the NEC cover - Answers -Special equipment and loctations
What does chapter 8 of the NEC cover - Answers -Communication systems
What does chapter 9 of the NEC cover - Answers -tables
What is an arc flash - Answers -Release of radiant energy in the form of heat and light
What is the cause of an arc flash - Answers -Major short circuit or a ground fault
what is an arc blast - Answers -an explosive event that comes with an arc flash
What is the best way to avoid electrical hazards - Answers -create an environment that
has all electric power removed
What is an arc flash suit - Answers -suit designed to protect workers body from flashes
what does FR stand for - Answers -fire resistant
what is an arc hazard - Answers -anything in which arc conditions exist
arc rating - Answers -measures the performance of the suit after being exposed to arc
flash
True or False: A mandatory rule can have exceptions. - Answers -False
de-energized - Answers -all electrical energy has been removed
incident energy - Answers -Energy lost in an arc flash
how do we calculate incident energy - Answers -Cal/cm^2
shock hazard - Answers -Anything that can cause injury or death due to shock
Disconnect Switch - Answers -A switch designed to disconnect electrical power from a
circuit or electrical equipment
True or False: Permissive rules are allowed but not required to be performed - Answers
-true
What does NEC stand for? - Answers -National Electrical Code
What do chapters 1-4 of the NEC cover - Answers -General electric installations
What do chapters 5-7 of the NEC cover - Answers -Special equipment and loctations
What does chapter 8 of the NEC cover - Answers -Communication systems
What does chapter 9 of the NEC cover - Answers -tables
What is an arc flash - Answers -Release of radiant energy in the form of heat and light
What is the cause of an arc flash - Answers -Major short circuit or a ground fault
what is an arc blast - Answers -an explosive event that comes with an arc flash
What is the best way to avoid electrical hazards - Answers -create an environment that
has all electric power removed
What is an arc flash suit - Answers -suit designed to protect workers body from flashes
what does FR stand for - Answers -fire resistant
what is an arc hazard - Answers -anything in which arc conditions exist
arc rating - Answers -measures the performance of the suit after being exposed to arc
flash
