TPC 205 Flashcards
The effects of current on the human body depends on what three factors?
- The amount of current conducted through the body.
- The path of the current.
- The length of time a person is subjected to the current.
If a shock victim appears to be un-injured or feeling fine, you should…
Call for prompt medical assistance
If a person is a victim of electric shock, your immediate action should be to…
Ensure that breathing and circulation is maintained.
If several workers are working on a single piece of equipment, they should…
Each apply a lock to the power source
If a victim of electric shock is unconscious, you should…
Check for circulation and breathing.
The first step in locking out power to a piece of equipment is to…
Notify the operator
If you must use a portable tool, but only a two slot receptacle is available, you should…
Use a two wire, double insulated tool.
What would best describe electrical separation between a worker and a conductor?
Insulation.
If a chemical comes in contact with your eyes, your immediate action should be to…
Rinse thoroughly.
The barricade tape used to keep personnel out of an area where hazardous electrical work is being performed should be…
Displayed at a readily visible level.
What tool is intended to be used to verify that a circuit has been de-energized?
Voltage tester.
When a piece of equipment is in a zero energy state, this means that…
It can not be activated accidentally.
Shaded text in the NEC and NEC handbook indicates that the information…
Has changed since the previous edition.
Which of the following would be covered by the NEC?
- Mining installation
-Public school
-Railroad equipment
-Water crafts
Public school
The NEC defines a qualified person as someone who is…
Familiar with the equipment operation and the hazards involved.
When working around electricity, you should never wear…
Clothing made of polyester.
To guard against electric shock, you should wear ____ gloves (for insulation) under ____ gloves (for protection).
Rubber
Leather
What kind of fuse is designed mainly for protecting motor circuits?
Dual element
According to NEC rules, plug fuses cannot be used in circuits exceeding ____ volts between circuits.
125
In an ambient-compensated circuit breaker, a ____ compensates for changes in ambient temperature.
Bimetallic strip
The most important consideration in selecting a molded case circuit breaker is…
Potential difference.
If more than one motor is connected to a feeder protection device, the rating of the device is determined by adding the highest current requirement for a single motor to the ____ of all other motors
Full-load current ratings.
Information on branch circuits, grounding, and overcurrent protection can be found in NEC chapter ____.
2
Article 430, the most widely used part of the NEC chapter 4, deals with ____ installation requirements.
Motor
NEC article 760 covers the special installation requirements of…
Fire alarms
A tools grounding wire carries current when…
A ground fault occurs.
To evaluate receptacle wiring and ground quickly, use a…
Receptacle tester.
Class C fire extinguisher is used for what type of fire?
Electrical.
What is the best course of action to take after a circuit breaker trips?
Determine what caused it to trip.
What kind of temperature detector consist of a calibrated wire enclosed in a protective shield?
Resistor.
The disadvantage of using line fuses to protect electric motors is that they only protect against…
Excess current.
The motor-running overcurrent protection device on a motor is usually an…
Overload relay
Single phasing in a three phase motor occurs when…
It continues running after one phase has been lost.
What does a ground fault circuit interrupter (GFCI) do?
Compares the current in two conductors of a circuit.
What color does a grounding wire have to be?
Green or green with a yellow stripe.
