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Lesson 2 Article 110

code practice workbook lesson 2

QuestionAnswer
1) 110.12(B) warns against the possible _____ to electrical equipment due to paint, plaster, cleaners, or abrasives and other corrosive or chemical agents. Damage
2) When the term voltage is used throughout the Code, it means the voltage at which the circuit _____. operates
3) List the two ways conductor sizes are expressed. AWG or circular mils
4) Electrical equipment shall be installed in a(n) _____and _____ manner. neat and workmanlike
A piece of electrical equipment with a UL label on it shall be installed in accordance with any _______ included in the listing or labeling. instructions
When the word conductor is not identified with a material, it indicates the use of ______. copper
) Manufacturers are required by 110.21 to mark their products so the manufacturer can be identified. The marking may consist of ____( Trademark and manufacturer's name
Which of the following is/are required by 110.22 when the disconnecting means is remotely located? 1 Each disconnecting means shall be legibly marked 2 The marking shall be of sufficient durability to withstand the environment both of these
Unused openings in boxes are generally required to be ______. closed
Working clearances about electrical equipment 600 volts or less shall not be less than___ wide or the width of the equipment,be clear and extend from the floor to___or the height of the equipment,allow at least a___ degree opening of all doors 30 " wide 6 1/2 feet 90 degree
110.14(B) requires a splice in a conductor to be covered with an insulation_____. equivalent to the conductors insulation
Which of the following statements is/are true according to 110.14(A) for terminals? 1 Terminals for more than one conductor shall be so identified. 2 Terminals used to connect aluminum conductors shall be so identified both 1 and 2
Wooden plugs driven into a masonry wall (shall/or shall not) be used for mounting electrical equipment. shall not
Electrical equipment provided with ventilating openings (shall/shall not) be installed so that the ventilated openings are not _______ shall obstructed
The temperature rating associated with the ampacity of a conductor shall be so selected and coordinated as to not exceed the lowest temperature rating of any 1 connected termination 2 conductor 3 device all of the above connected termination conductor and device
On a 4-wire, delta-connected system where the midpoint of one phase winding is grounded to supply lighting and similar loads, the conductor or busbar having the higher phase voltage to ground shall be durably and permanently marked in what color? orange
Electrical equipment which are in other than dwelling units and are likely to require examination, adjustment, servicing, or maintenance while energized shall be ______ to warn qualified personnel of potential electric arc flash hazards field marked
Each disconnecting means shall be legibly ___ to indicate its purpose unless located and arranged so the purpose is evident marked
Why does the NEC specify that sufficient access and working space shall be provided and maintained about all electric equipment? To permit ready and safe operation and maintenance of such equipment. 110.26
For equipment rated ____ or more and over six 'wide, that contains overcurrent devices, switching devices, or control devices, there shall be one entrance and egress from the working space not less than 24" wide and 6 ½'high at each end of the workspace 1,200 amperes
All switchboards, panelboards, distribution boards, and motor control centers shall be located in _____spaces and protected from damage dedicated
For electrical equipment rated 600 volts the space equal to the width and depth of the equipment from the floor to a height of _ above the equipment or to the structural ceiling, whichever is lower, shall be dedicated to the electrical installation 6 feet
In general. The Code requires that live parts of electrical equipment operating at ______ or more shall be guarded against accidental contact. 50 Volts
Is it generally required to mark the maximum available fault current on service equipment installed in other than dwelling units? Yes 110.24 A
Created by: Josh Hampton
 

 



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