DCARI Virtual April 29 2020-Electrical Receptacles
This test was generated for those who attended the April 29, 2020 class on electrical receptacles, taught by Cameron Novak.
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Clear selection
Thermoset plastics will char and maintain their shape, while thermoplastics tend to melt and flow. *
10 points
In order to fully examine a receptacle, the investigator should: *
10 points
Arc tracking failures are the only failures an investigator needs to look for on a receptacle. *
10 points
Factors that should be considered in the analysis of a potential ignition scenario involving a receptacle with evidence of arc melting include all of the following, except: *
10 points
NFPA 921 does not provided guidance on the difference between intrusive and destructive examinations. *
10 points
The primary components of interest of a receptacle are: *
10 points
An arc tracking failure is likely to have heavily localized damage between the arc sites on the ground yoke and power rail, even in the presence of damage from fire impingement. *
10 points
If an energized item is plugged into a receptacle, the power cord to the item is the most likely area for the presence of an arc site because it is exposed to the fire event before the receptacle or associated branch circuit wiring. *
10 points
When an energized item undergoes direct flame impingement, the arc failures typically occur as a result of the gradual buildup of resistance or current flow, not a short duration arcing event such as arcing through char or direct contact of energized components. *
10 points
GFCI receptacles can present unique arc damage because: *
10 points
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