MIDTERM

Table ___ is used to detrmine protective clothing and PPE to be used when working within the arc flash boundary based on the determined arc flash ppe catagory. Arc-rated clothing with a min. Arc rating of ___ is required for arc flash cat 2

• 130.7(C)(15)(a) / 8cal

• 130.7(C)(15)(b) / 4cal

• 130.7(C)(15)(c) / 4cal

• 130.7(C)(15)(c) / 8cal

Which statement is not correct concerning the Napa 70E 130.5 arc flash risk assessment requirement

• Analysis is certain to be good for the life of the equipment

• Analysis must be reviewed periodically not to exceed five years

• Analysis must be updated when a major modification or renovation occurs

If an OCPD has not been maintained or has been improperly maintained, it may take longer to clear an arcing fault current than its specified published clearing time. as a consequence, the actual arc flash incident __?

• may release significantly greater thermal energy than that determined by an incident energy analysis

• will release the same thermal energyt as determined by the arc flash risk assessment, since the thermal energy released only depends on the magnitude of the arcing fault current.

which statement is most accurate concerning NFPA 70E chapter 2?

• has maintenance requirements for overcurrent protection devices as well as other electrical equipment

• only has maintenance requirements for overcurrent protective devices since the level of arc flash hazards are so dependent on the proper operation of over current protection devices

all firealarm audible measurements are taken using the ___ weighted scale

• a

• b

• c

• d

a non-sleeping area with an average SPL of 50 dBA and a max SPL of 59 dBA requires a min fire alarm notification appliance signal of ___?

• 55 dBA

• 64 dBA

• 65 dBA

• 75 dBA

NEC ___ requires firestopping for all penetrations through fire rated floors and barriers.

• 300.21

• 300.22

• 300.23

• 310.11 (D)

The Min safety factor for batteries used as a secondary power supply in a ECS is __?

• 0%

• 10%

• 20%

• 30%

which of the following drawing sizes is the largest?

• a

• b

• c

• d

which of the following uses a diazo process to develop plans?

• 3D software

• blueprint

• CAD

• plotter