Nec Chapter 1
15 Questions
| Attempts: 591
Chapter 1, quizes about art 100. Art 110
Questions and Answers
- 1.When the word conductor is used in the NEC and the type of conductor material is not specified, the NEC requirement is for ________________.
- A.
Aluminum
- B.
Copper
- C.
Copper or aluminum
- D.
Insulated
- 2.The minimum headroom working space about a switchboard in a commercial installation is _________ feet.
- A.
6 1/2 feet
- B.
8 feet
- C.
6 feet
- D.
10 feet
- 3.All listed or labeled equipment shall be installed and used in accordance with any __________ included in the listing or labeling.
- A.
Standards
- B.
Labeling
- C.
Instructions
- D.
None of the above
- 4.On all four wire delta connected systems where the midpoint of one is grounded, the high leg shall be identified with the color___?
- A.
Red
- B.
Blue
- C.
Yellow
- D.
Orange
- 5.The with of the working space in front of the electric equipment shall be the width of the equipment or ___ inches, whichever is greater
- A.
A. 48 inches
- B.
B. thirty inches
- C.
C. twenty four inches
- D.
D. thirty six
- 6.Round access openings in manholes shall not be less than ____ inches in diameter.
- A.
A. Twenty six
- B.
B. thirty
- C.
C. thirty six
- D.
D. forty
- 7.Where indoor electrical installations of electrical equipment rated at over 600V nominal are accessible to unqualified persons, the installation must be made with ___ equipment
- A.
A. nonmetallic
- B.
B. fire rated
- C.
C. metal enclosed
- D.
D. listed
- 8.Unused current transformers associated with potentially energized circuits shall be __?
- A.
A. short circuit
- B.
B. removed
- C.
C. tagged
- D.
D. grounded
- 9.Electrical connections in the form of wire connectors (nuts) or splicing installed on conductors for direct burial shall be ___ for such use
- A.
Approved
- B.
Labeled
- C.
Marked
- D.
Listed
- 10.Electrical equipment shall be installed in a ____ and workmanlike manner
- A.
Tidy
- B.
Secure
- C.
Neat
- D.
None of the above
- 11.Conductors and equipment required or permitted by this code shall be acceptable only if
- A.
Listed
- B.
Approved
- C.
Labeled
- D.
Suitable
- 12.Unused cable or raceway openings in boxes, auxiliary gutters, cabinets, cutout boxes, meter socket enclosures, equipment cases, or housing shall be effectively ____ to afford protection substantially equivalent to the wall of the equipment.
- A.
Closed
- B.
Blanked
- C.
Covered
- D.
Sealed
- 13.Switchboards, panelboards, industrial control panels, meter socket enclosures and motor control center that are in the other than dwelling occupancies and are likely to require examination, adjustment, servicing, or maintenance while energized shall be ____ to warn qualified persons of potential electric arc flash hazards
- A.
Field marked
- B.
Painted red
- C.
Locked
- D.
Elevated from grade level
- 14.____ plugs driven into holes in masonry, concrete, plaster, or similar materials shall not be used to secure electrical equipment
- A.
Metal
- B.
Plastic
- C.
Copper
- D.
Wooden
- 15.Equipment intended to interrupt current at fault levels shall have a (n) ______ sufficient for the nominal circuit voltage and the current that is available at the line terminals of the equipment
- A.
Nominal rating
- B.
Interrupting rating
- C.
Overcurrent device
- D.
Internal capacity
Back to top