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2008 NEC Review Practice Test 7

Course Name: 2008 NEC Review
Quiz Number:  No. 7
Teacher:  Gerald Newton
Teacher's Home Page:  http://www.electrician2.com
Teacher's Email:  electrician@electrician2.com

No. of Questions= 20


1 Type MV cable is rated 2,001-volts or higher.
            
a)
True
b)
False
2 Open wiring on insulators above 6 feet from the floor does not require protection.
            
a)
True
b)
False
3 Cable tray systems must not be used in hoist ways.
            
a)
True
b)
False
4 Flexible metal conduit may be used to protect conductors emerging from the ground and run on a pole.
            
a)
True
b)
False
5 Under normal conditions, direct buried cables must be buried at least 24 inches.
            
a)
True
b)
False
6 A No. 6 copper conductor in a vertical raceway must be supported at least every 80 feet.
            
a)
True
b)
False
7 Conductors of size No. 1 for general use may not be run in parallel.
            
a)
True
b)
False
8 A connection of a No. 8 conductor to a terminal can be by means of a pressure connector or solder lug.
            
a)
True
b)
False
9 At least 4 Inches of free conductor must be left at each outlet to connect luminaires.
      
a)
True
b)
False
10 Holes in studs for cables must be in the center and not less than 1 inch from the nearest edge of the stud.
     
a)
True
b)
False
11 The smallest fixture wire permitted by the Code is size No. 18.
            
a)
True
b)
False
12 Flexible cords may not be used if they are concealed behind building walls, ceilings or floors.
            
a)
True
b)
False
13 When six current-carrying conductors are installed in a raceway, the maximum load current of each must be reduced to 70 per cent.
            
a)
True
b)
False
14 A No. 14 grounded conductor in a circuit must have a white or gray color.
            
a)
True
b)
False
15 A feeder tap less then 25 feet long requires overcurrent protection if the ampacity of the tap conductors is at least one-third of the ampacity of the feeder conductors.
            
a)
True
b)
False
16 A conductor in a general circuit with an ampacity of 735-amperes may be protected by an 800-ampere fuse.
            
a)
True
b)
False
17 A three-phase air conditioner must be directly connected to a recognized wiring method and not by flexible cord.
      
a)
True
b)
False
18 An attachment plug and receptacle may disconnect cord-connected household refrigerating equipment.
            
a)
True
b)
False
19 Type AC cable must not be used to connect motors to their supply.
      
a)
True
b)
False
20 The frames of stationary motors supplied by metal-enclosed wiring must be grounded.
      
a)
True
b)
False





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© 2008 Gerald Newton