103H Flashcards
1
Q
Three factors that determine injury for an arc flash
A
Proximity
Distance
Time
2
Q
How many toxic vapors do arc flashes produce
A
100
3
Q
Temperature of an arc flash
A
35,000
4
Q
Arc flash safety book is
A
CSAz462
5
Q
Arc flash boundary is the distance from an arc fault at which a person may be exposed to an incident energy of
A
1.2 calories/cm
6
Q
High voltage switchgear is rated for what working distance
A
910mm
7
Q
Low voltage switch gear is rated for what working distance
A
610mm
8
Q
Low voltage motor control center is rated for what working distance
A
455mm
9
Q
An electric arc is a
A
Short circuit in air
10
Q
3 step arc flash process
A
Electric arc- arc flash - arc blast
