Electrical Awareness Flashcards
Some accidents in the electrical industry occur because the ? is overlooked as a hazard.
Second point of contact
A common second point of contact and an overlooked conductor is the ?
Surface or Subsurface of the Earth
? is a potential electrical conductor
Everything
? of a material determines how good a conductor or insulator the material is
Resistance
There are several factors that determine the severity of an electric shock.
The amount of current flowing through the body
The current path through the body
The length of time the body remains in the circuit
The current frequency
? milliamperes of current may not be painful, but is disturbing.
5
? to ? milliamperes will cause extreme pain, respiratory arrest, severe muscular contractions, and may result in death.
50
150
The most common shock-related injury is ?
burns
Electrical accidents may result from several factors. A few are ?, ? and ?.
unsafe equipment or installation
unsafe work practices
unsafe environment
GFCI interrupt the flow of electricity within as little as ?
1/40 of a second
GFCI interrupt the flow of electricity if the difference of current exceeds ?
5 milliamps
Another form of protection incorporated to protect personnel against electrical shock is ?
Double insulation on tools
Fuses and circuit breakers should never be relied on for ?
employee protection.
Grounding is a ? protective measure to protect against electrical shock
secondary
The preferred method of grounding in the industry is to establish an ?
equipotential zone
