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1. |
314.16(B)(4) Device or Equipment Fill
This section has been revised to require that four conductors be counted for devices that are over 2 inches wide such as found with some range and dryer receptacles.
For each yoke or strap containing one or more devices or equipment, a double volume allowance in accordance with Table 314.16(B) shall be made for each yoke or strap based on the largest conductor connected to a device(s) or equipment supported by that yoke or strap.
NEW A device or utilization equipment wider than a single 2 inch device box as described in Table 314.16(A) shall have double volume allowances provided for each gang required for mounting.
Question: A device or utilization equipment wider than a single 2 inch device box as described in Table 314.16(A) shall have _____________ provided for each gang required for mounting.
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a)
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single volume allowances
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b)
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triple volume allowances
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c)
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double volume allowances
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2. |
314.24 (C)(1)Minimum Depth of Boxes for Outlets, Devices and Utilization Equipment
This section has been expanded and revised. A minimum depth requirement has been added for outlet and device boxes to insure that when equipment and conductors are installed in these boxes there is room for both.
Boxes that enclose utilization equipment that projects more than 1 7/8 inches rearward from the mounting plane of the box shall have a depth that is not less than the depth of the equipment plus 1/4 inch.
Question: Boxes that enclose utilization equipment that projects more than 1 7/8 inches rearward from the mounting plane of the box shall have a depth that is not less than the depth of the equipment plus _______.
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a)
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1/2 inch
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b)
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1/4 inch
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c)
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1 inch
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3. |
314.27(A) Boxes at Luminaire Outlets.
Boxes installed in ceilings must be designed for the purpose and must be able to support a luminaire that weighs at least 50 pounds.
Question: Boxes installed in ceilings must be designed for the purpose and must be able to support a luminaire that weighs at least __________.
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a)
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25 pounds
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b)
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50 pounds
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c)
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100 pounds
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4. |
314.27(A) Boxes at Luminaire Outlets
Boxes in walls shall be designed for the purpose and if rated for other than 50 pounds must be marked to indicate the maximum weight the box can support.
Question: Boxes in walls shall be designed for the purpose and if rated for other than _________ must be marked to indicate the maximum weight the box can support.
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a)
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25 pounds
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b)
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50 pounds
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c)
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15 pounds
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5. |
314.27(E) and Exception Utilization Equipment
Boxes used for the support of utilization equipment other than ceiling suspended paddle fans shall meet the requirements of 314.27(A) and (B) for the support of a luminaire that is the same size and weight.
Exception: Utilization equipment other than suspended paddle fans weighing not more than 6 pounds are permitted to be secured to boxes or plaster rings with not less than two No. 6 or larger machine screws.
Question: Utilization equipment other than suspended paddle fans weighing _________________ are permitted to be secured to boxes or plaster rings with not less than two No. 6 or larger machine screws.
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a)
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not more than 6 pounds
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b)
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not more than 50 pounds
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c)
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not more than 16 pounds
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6. |
314.28(A) Minimum Size
For raceways containing conductors of 4 AWG or larger, THAT ARE REQUIRED TO BE INSULATED and for cables containing conductors of 4 AWG or larger, the minimum dimensions of pull or junction boxes installed in a raceway or cable run shall comply with (A)(1) through (A)(3).
The minimum dimensions do not apply to uninsulated or bare conductors or to grounding conductors that are not required to be insulated.
Question: For raceways containing conductors of 4 AWG or larger, __________________________________ and for cables containing conductors of 4 AWG or larger, the minimum dimensions of pull or junction boxes installed in a raceway or cable run shall comply with (A)(1) through (A)(3) of 314.28(A).
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a)
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THAT ARE INSULATED
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b)
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THAT ARE REQUIRED TO BE BARE
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c)
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THAT ARE REQUIRED TO BE INSULATED
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7. |
314.28(A)(2) Title of this section has been changed from "Angle or U Pulls" to "Angle or U Pulls or Splices."
Where splices or where angle or U pulls are made, the distance between each raceway entry inside the box and the opposite wall of the box shall not be less than six times the metric designator (trade size) of the largest raceway in a row. This distance shall be increased for additional entries by the amount of the sum of the diameters of all other raceway entries in the same row on the same wall of the box. Each row shall be calculated individually and the single row that provides the maximum distance shall be used.
and the single row that provides the maximum distance shall be used.
Question: Where splices or where angle or U pulls are made, the distance between each raceway entry inside the box and the opposite wall of the box shall not be less than________the metric designator (trade size) of the largest raceway in a row.
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a)
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eight times
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b)
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six times
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c)
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ten times
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8. |
314.30(C) Enclosed Wiring
All enclosed conductors and any splices or terminations, if present, shall be LISTED as suitable for wet locations.
The title to this section has been modified to read Enclosed Wiring. It previously stated Handhold Enclosures Without Bottoms.
Question: All enclosed conductors and any splices or terminations, if present, shall be ________ as suitable for wet locations.
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a)
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LISTED
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b)
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SUITABLE
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c)
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IDENTIFIED
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9. |
320.10(A)(1) Uses Permitted for Type AC Cable.
Type AC Cable is permitted to be used for feeders and branch circuits in concealed and exposed work.
The words "for feeders and branch circuits" have been added to this section.
Question: Type AC Cable ______________ to be used for feeders and branch circuits in concealed and exposed work.
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a)
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is not permitted
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b)
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is permitted
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c)
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is permitted if approved
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10. |
330.10(A)(11) Type MC Cable is permitted in wet locations provided the following conditions are met.
a. The metallic covering is impervious to moisture.
b. A lead sheath or moisture-impervious jacket is provided under the metal covering.
c. The insulated conductors under the metallic covering are listed for use in wet locations and a corrosion resistant jacket is provided over metallic sheath.
Question: Type MC Cable is permitted in wet locations provided:
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a)
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The metallic covering is impervious to moisture.
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b)
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A lead sheath or moisture-impervious jacket is provided under the metal covering.
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c)
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The insulated conductors under the metallic covering are listed for use in wet locations and a corrosion resistant jacket is provided over metallic sheath.
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d)
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a, b, and c
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