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1. |
230.53 Revised. Where exposed to the weather raceways enclosing service entrance conductors shall be suitable for wet locations and arranged to drain but do not have to be raintight.
Question: Where exposed to the weather raceways enclosing service entrance conductors shall be _______________ and arranged to drain.
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a)
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raintight
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b)
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suitable for wet locations
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2. |
230.54(A) and (B) Revised. Service heads listed for use in wet locations are required. (A) Service Head. Service raceways shall be equipped with a service head at the point of connection to service-drop conductors. The service head shall comply with the requirements for fittings in 314.15.
(B) Service Cable Equipment with Service Head or Gooseneck. Service cables shall be equipped with a service head. The service head shall comply with he requirements for fittings in 314.15.
314.15 Damp, Wet, or Hazardous (Classified) Locations. (A) Damp or Wet Locations. In damp or wet locations, boxes, conduit bodies, and fittings shall be placed or equipped so as to prevent moisture from entering or accumulating within the box, conduit body, or fitting. Boxes, conduit bodies, and fittings installed in wet locations shall be listed for use in wet locations.
Question: Service heads used with service raceways or service cables shall be ________ for use in wet locations.
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a)
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Identified
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b)
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Listed
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3. |
230.71(A) This section has been revised to make it clear that for listed equipment the disconnects for designated devices do not count when determining the six disconnect maximum provisions of 230.71.
This list includes:
1. Power monitoring equipment
2. Surge-protective devices
3. Control circuit of the ground fault protection system
4. Power operable service disconnecting means.
Question: For a listed service disconnecting means located at one location the disonnects for the following are not counted when determining the maximum of six disconnects.
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a)
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Power monitoring equipment
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b)
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Surge-protective device(s)
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c)
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control circuit of the ground-fault protection system
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d)
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Power operable service disconnecting means
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e)
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All of the above
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4. |
230.79 Rating of Service Disconnect. The word calculated has been inserted before load. The service disonnecting means shall have a rating not less than the CALCULATED load to be carried, determined in accordance with parts III, IV, or V of Article 220, as applicable.
Question:
The service disconnecting means shall have a rating not less than the ________ load.
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a)
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actual
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b)
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calculated
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5. |
230.82(3) Meter Disconnect Switches Two new requirements have been added for Meter socket disconnect switches. They now must be grounded and bonded in accordance with parts V and VII of Article 250 and shall be capable of interrupting the load served.
Question: Meter Disconnect Switches are required to be capable of interrupting the load served and are required to be grounded and bonded in accordance with Parts V and VII of Article _______ .
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a)
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100
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b)
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250
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c)
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300
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6. |
230.205(A) Revision for Premise High Voltage Distribution Systems on private property. Service disconnects for these systems whether underground of overhead are not required to be readily accessible.
For either overhead or underground primary distribution systems on private property, the service disconnect shall be permitted to be located in a location that is not readily accessible.
Question: The disconnect for the primary of a high voltage distribution system located on private property is permitted to be __________ .
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a)
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accessible
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b)
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not readily accessible
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c)
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a and b
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7. |
240.4(D) No. 16 and No. 18 conductors and ampacity rating added. To be competitive in the global market small conductors are now allowed.
Small Conductors
Unless specifically permitted in 240.4(E) or (G) the overcurrent protection shall not exceed that required by (D)(1) through D(7) after any correction factors for ambient temperature and number of conductors have been applied.
(1) 18 AWG Copper. 7 amperes provided all the following conditions have been met:
(1) Continuous loads do not exceed 5.6 amperes
(2)Overcurrent protection is provided by one of the following: (a)Branch-circuit rated circuit breakers listed and marked for use with 18 AWG copper wire. (b) Branch-circuit rated fuses listed and marked for use with 18 AWG copper wire (c) Class CC, Class J or Class T fuses.
Question: The ampacity of a No. 18 copper conductor that can be used per 240.4(D) is _______ .
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a)
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7 amperes
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b)
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10 amperes
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c)
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12 amperes
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8. |
240.4(D) No. 16 and No. 18 conductors and ampacity rating added. To be competitive in the global market small conductors are now allowed.
Small Conductors
Unless specifically permitted in 240.4(E) or (G) the overcurrent protection shall not exceed that required by (D)(1) through D(7) after any correction factors for ambient temperature and number of conductors have been applied.
(2) 16 AWG Copper. 7 amperes provided all the following conditions have been met:
(1) Continuous loads do not exceed 8 amperes
(2)Overcurrent protection is provided by one of the following: (a)Branch-circuit rated circuit breakers listed and marked for use with 16 AWG copper wire. (b) Branch-circuit rated fuses listed and marked for use with 16 AWG copper wire (c) Class CC, Class J or Class T fuses.
Question: The ampacity of a No. 16 copper conductor that can be used per 240.4(D) for continuous loads is _______ .
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a)
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5.6 amperes
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b)
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8 amperes
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c)
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10 amperes
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9. |
240.21(B)(1) and 240.21(C)(2) The two Fine Print Notes have been revised because the categories of "lighting and appliance" and "power" panelboards have been removed from Article 408 since more than 42 circuits are now allowed in panelboards. The new Fine Print Note states: For overcurrent protection requirements for panelboards see 408.36.
Question: Overcurrent protection requirements for panelboards are found in _________ .
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a)
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240.21
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b)
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408.36
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10. |
240.21(C)(2)(4) The 10 foot transformer tap rules in this section have been expanded to cover field installations where the secondary conductors leave the enclosure or vault in which the supply connections are made.
For field installations where the secondary conductors leave the enclosure or vault in which the supply connection is made, the rating of the overcurrent device protecting the primary of the transformer, multiplied by the primary to secondary transformer voltage ratio, shall not exceed 10 times the ampacity of the secondary conductor.
Question: For field installations where the secondary conductors leave the enclosure or vault in which the supply connection is made, the rating of the overcurrent device protecting the primary of the transformer, multiplied by the primary to secondary transformer voltage ratio, shall not exceed __ times the ampacity of the secondary conductor.
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a)
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1
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b)
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2
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c)
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5
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d)
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10
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