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Chapter One Electrical Systems

True/False
Indicate whether the sentence or statement is true or false.
 

 1. 

Equipment designed to open circuits under fault conditions shall have an interrupting rating suitable for the available voltage and circuit current at the line side of the equipment.
 

 2. 

Installations underground in mines are not covered by the NEC®.
 

 3. 

At least two entrances to electrical rooms shall be provided to give access to the working space about all electrical equipment rated less than 1200 A.
 

 4. 

Explanatory material appears in the NEC® in Fine Print Notes.
 

 5. 

Electric equipment with ventilating openings shall be installed so that openings are not blocked.
 

Completion
Complete each sentence or statement.
 

 6. 

The first four chapters of the NEC® apply generally unless they are ____________________ by the later chapters.
 

 

 7. 

A conductor’s ____________________ is the amount of amperes it can carry continuously without exceeding its insulation rating.
 

 

 8. 

Boxes installed within walls that are required to be taken down to gain access are not considered ____________________.
 

 

 9. 

The word ____________________ indicates that an NEC® rule is mandatory.
 

 

 10. 

The two-fold purpose of the NEC® is to protect ____________________ and ____________________ from the dangers associated with the use of electricity.
 

 

 11. 

Interpretations and approval of equipment are granted by the ____________________.
 

 

 12. 

The AHJ can permit alternate ____________________ for installation, if they believe the installation is equally effective at meeting the intended objective.
 

 

 13. 

Although done in conformance with the NEC®, all electrical installations may not be adequate for ____________________ use.
 

 

 14. 

____________________ conductors are conductors not encased in a material recognized by the NEC®.
 

 

 15. 

Connectors, couplings, locknuts, and bushings are electrical ____________________.
 

 

 16. 

Equipment that has been ____________________ is published in a directory by the testing lab certifying that it has met established standards.
 

 

 17. 

When not specified, all conductors in the NEC® are considered to be ____________________.
 

 

 18. 

All unused openings in equipment are required to be effectively ____________________.
 

 

 19. 

Wire connectors for use with conductors in direct-burial applications shall be ____________________.
 

 

 20. 

Each ____________________ required by the NEC® shall be legibly marked to indicate its purpose.
 

 



 
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