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1. |
310.13 Conductor Construction and Applications
Equipment grounding conductors shall be permitted to be sectioned within a listed multiconductor cable, provided the combined circular mil area in each cable complies with 250.122.
Question: Equipment grounding conductors shall be permitted to be sectioned within a listed multiconductor cable, provided the ____________ area in each cable complies with 250.122.
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a)
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any one conductor circular mil area
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b)
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combined circular mil
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c)
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one half the circular mil area
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2. |
314.4 Metal Boxes
Metal boxes shall be grounded and bonded as applicable.
The word bonded has been added.
Question: Metal boxes shall be grounded and _________ as applicable according to Article 250.
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a)
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bonded
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b)
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attached
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c)
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connected to the grounded conductor
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3. |
334.15(C) In Unfinished Basements and Crawl Spaces
The words "and crawl spaces" have been added to this section.
Conduit or tubing shall be provided with a suitable insulating bushing or adapter at the point the cable exits a raceway.
The NM sheath shall extend through the conduit or tubing and into the outlet box or device box for a distance of not less than 1/4 inch
The cable shall be secured within 12 inches of the point where the cable enters the conduit or tubing
Metal boxes, tubing, and conduit shall be connected to an equipment grounding conductor
Question: Section 334.15(C) applies to unfinished basements and to _____________ .
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a)
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under floor spaces
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b)
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well houses
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c)
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crawl spaces
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4. |
Chapters 4, 5, and 6
The provisions for locking or adding a lock to the disconnecting means requires a permanent type locking mechanism. The locking means shall remain in place whether or not the lock is installed or not. Portable means for adding a lock to a switch or circuit breaker are not permitted.
This requirement has been added to applicable sections in Chapters 4, 5 and 6.
Question: The provisions for locking or adding a lock to the disconnecting means requires a _________ type locking mechanism.
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a)
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permanent
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b)
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temporary or permanent
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c)
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temporary
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5. |
Table 400.4 Superscript Note 8
The third conductor in Type HPN shall be used as an equipment grounding conductor.
Question: The third conductor in Type HPN shall be used as an ______________ conductor.
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a)
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ungrounded conductor
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b)
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equipment grounding
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6. |
Table 440.5(A) Ampacities added for flexible cords and cable in sizes 17 AWG and 15 AWG.
The ampacity for 17 AWG in column A is 9 amperes, and the ampactiy for 15 AWG is 12 amperes in Column A and 16 amperes in Column B.
By Table 440.5(A) the ampacity of 17 AWG is ________ amperes.
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a)
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12
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b)
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9
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c)
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15
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7. |
402.11 Uses Not Permitted for Fixture Wire
Fixture wires shall not be used as branch circuit conductors except as permitted elsewhere in the code.
The phrase "except as elsewhere permitted in the code" has been added because fixture wires were being used as permitted in 430.72 for motor control circuits and 725.27(B) for Class 1 circuits.
The use of fixture wires within fixtures or between fixtures as a substitute for the branch circuit conductors is clearly not permitted by this rule.
The use of fixture wire for an auxiliary luminaire used to extend the secondary conductors of a lighting luminaire ballast is permitted.
430.72 and 725.27(B) permit fixture wire to be used for motor control circuits when tapped to secondary side conductors for a motor short circuit and ground fault protective device where they do serve as branch circuit conductors
Question: Fixture wires shall not be used as __________ except as permitted elsewhere in the code.
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a)
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tap conductors
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b)
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branch circuit conductors
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8. |
404.4 Damp or Wet Locations
The words "outside a building" were removed because not all locations outside of buildings are wet locations. Locations under porch roofs can be damp locations. Weatherproof covers are now required for switches or circuit breakers installed in damp locations.
A switch or circuit breaker in a damp or wet location shall be enclosed in a weatherproof enclosure or cabinet that shall comply with 312.2(A). A flush mounted switch or circuit breaker in a damp or wet location shall be equipped with a weatherproof cover. Switches shall not be installed within wet locations in tub or shower spaces unless installed as part of a listed tub or shower assembly.
A flush mounted switch or circuit breaker in a damp or wet location shall be equipped with a _____________ .
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a)
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rain tight cover
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b)
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waterproof cover
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c)
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weatherproof cover
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9. |
404.8(C) Multipole Snap Switches
A new subsection (C) has been added to address the problems associated with snap switches used to control more than a single circuit.
A multipole, general use snap switch shall not be permitted to be fed from more than a single circuit unless it is listed and marked as a two circuit or three circuit switch, or unless its voltage rating is not less than the nominal line to line voltage of the system supplying the circuits.
Question: A multipole, general use snap switch shall not be permitted to be fed from more than a single circuit unless _______________________, or unless its voltage rating is not less than the nominal line to line voltage of the system supplying the circuits.
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a)
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it is listed and marked as a high voltage switch
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b)
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it is listed and marked as a multipole switch
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c)
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it is listed and marked as a two circuit or three circuit switch
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10. |
404.9(B) Grounding
The words "connected to an equipment grounding conductor" have replaced the phrase "effectively grounded"
Snap switches, including dimmer and similar control switches, shall be connected
to an equipment grounding conductor and shall provide a means to connect metal
faceplates to the equipment grounding conductor, whether or not a metal
faceplate is installed. Snap switches shall be considered to be part of an
effective ground-fault current path if either of the following conditions is
met.....
Question: Snap switches, including dimmer and similar control switches, shall be connected to ____________ and shall provide a means to connect metal faceplates to the equipment grounding conductor.
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a)
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a grounded conductor
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b)
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an equipment grounding conductor
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c)
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an equipment bonding conductor
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