| 1. |
The circuit conductor that is defined as being intentionally grounded is the _______ conductor.
|
|
|
|
|
|
a)
|
|
grounding |
|
b)
|
|
grounded |
|
c)
|
|
equipment grounding |
|
d)
|
|
grounding electrode |
|
|
|
|
|
|
| 2. |
Class II location are those that are hazardous because of the presence of ________.
|
|
|
|
|
|
a)
|
|
ignitable vapors |
|
b)
|
|
ignitable fibers |
|
c)
|
|
combustible dust |
|
d)
|
|
combustible liquids |
|
|
|
|
|
|
| 3. |
If three resistors with values 5, 10, and 15 ohms respectively are connected in parallel, the combined total resistance is ____ ohms. Select the closest answer.
|
|
|
|
|
|
a)
|
|
0.4 |
|
b)
|
|
2.3 |
|
c)
|
|
2.7 |
|
d)
|
|
30.0 |
|
|
|
|
|
|
| 4. |
The wiring in a 200 foot long branch circuit measures a total resistance of 0.5 ohms. What is the resistance per 1,000 feet?
|
|
|
|
|
|
a)
|
|
0.5 ohms |
|
b)
|
|
1.0 ohms |
|
c)
|
|
2.5 ohms |
|
d)
|
|
5.0 ohms |
|
|
|
|
|
|
| 5. |
The maximum total voltage drop on both feeders and branch circuits to the farthest outlet should not exceed ____ percent of the supply voltage.
|
|
|
|
|
|
a)
|
|
2 |
|
b)
|
|
3 |
|
c)
|
|
4 |
|
d)
|
|
5 |
|
|
|
|
|
|
| 6. |
The working space in front of enclosed equipment operating at a
voltage of 480 volts must have a width of a least ______ inches. |
|
|
|
|
|
a)
|
|
42 |
|
b)
|
|
30 |
|
c)
|
|
36 |
|
d)
|
|
20 |
|
|
|
|
|
|
| 7. |
For dwelling units, the Code requires a minimum of _______ for the kitchen small appliance load.
|
|
|
|
|
|
a)
|
|
one 15 ampere |
|
b)
|
|
two 15 ampere circuits |
|
c)
|
|
one 20 ampere circuit |
|
d)
|
|
two 20 ampere circuits |
|
|
|
|
|
|
| 8. |
Generally, equipment grounding conductors No. 6 and smaller shall be identified by ______.
(select best answer) |
|
|
|
|
|
a)
|
|
green color unless it is bare |
|
b)
|
|
green color with one or more yellow stripes unless it
is bare |
|
c)
|
|
bare conductor |
|
d)
|
|
bare or Individually covered or insulated equipment
grounding conductors shall have a continuous outer finish that is
either green or green with one or more yellow stripes except as permitted
in this section. |
|
e)
|
|
All of the above |
|
|
|
|
|
|
| 9. |
Rod and pipe grounding electrodes shall not be less than ____ feet in length.
|
|
|
|
|
|
a)
|
|
6 |
|
b)
|
|
7 |
|
c)
|
|
8 |
|
d)
|
|
10 |
|
|
|
|
|
|
| 10. |
Every dining room of a dwelling unit requires receptacle outlets to be installed so that no point along the floor line in any wall space more than _____ feet, measured horizontally, from an outlet.
|
|
|
|
|
|
a)
|
|
6 |
|
b)
|
|
7 |
|
c)
|
|
8 |
|
d)
|
|
10 |
|
|
|
|
|
|
| 11. |
Open runs of Listed liquidtight
flexible nonmetallic conduit installed in lengths longer then ____
feet shall be secured every ____ feet. |
|
|
|
|
|
a)
|
|
6, 3 |
|
b)
|
| 6, 4 1/2 |
|
c)
|
| 6, 66 |
|
d)
|
| 10, 10 |
|
|
|
|
|
|
| 12. |
Noncurrent-carrying metal parts of electrical equipment may
be required to be _____________ lightning rod conductors in air and
from lightning conductors in concrete.
|
|
|
|
|
|
a)
|
| spaced from |
|
b)
|
| bonded to |
|
c)
|
| separated from |
|
d)
|
| all of the above |
|
|
|
|
|
|
| 13. |
Branch-circuit conductors supplying a single motor which operates under continuous duty shall have an ampacity not less than ____ percent of the motor full-load current rating.
|
|
|
|
|
|
a)
|
| 100 |
|
b)
|
| 115 |
|
c)
|
| 125 |
|
d)
|
| 140 |
|
|
|
|
|
|
| 14. |
The maximum number of overcurrent devices (other than those provided in the mains) in a single cabinet of a lighting and appliance panelboard
___________ . (select the best answer) |
|
|
|
|
|
a)
|
| is 30 |
|
b)
|
| is 36 |
|
c)
|
| is no longer limited. The quantity of
overcurrent devices is limited to design and listing of the
panelboard. |
|
d)
|
| is 42 |
|
|
|
|
|
|
| 15. |
Where a branch circuit supplies
continuous loads or any combination of continuous and noncontinuous
loads, the minimum branch-circuit conductor size, before the application
of any adjustment or correction factors, shall have an allowable ampacity
not less than the noncontinuous load plus ______ percent of the continuous
load. |
|
|
|
|
|
a)
|
| 65 |
|
b)
|
|
80 |
|
c)
|
|
125 |
|
d)
|
|
200 |
|
|
|
|
|
|
| 16. |
Liquid-tight flexible metal conduit may be used in _____.
|
|
|
|
|
|
a)
|
| areas that are both exposed and concealed |
|
b)
|
| areas that are subject to physical damage |
|
c)
|
| 4 1/2 inch trade size |
|
d)
|
| 5 inch trade size |
|
|
|
|
|
|
| 17. |
The maximum size of flexible metallic tubing that may be used in any construction or installation is _____.
|
|
|
|
|
|
a)
|
| 3/8" |
|
b)
|
| 1/2" |
|
c)
|
| 3/4" |
|
d)
|
| 1" |
|
|
|
|
|
|
| 18. |
Where direct buried conductors and cables for circuits of of less than 600 volts emerge from the ground they shall be protected by enclosures or raceways that extend from below grade to a point at least ____ feet above finished grade.
|
|
|
|
|
|
a)
|
| 4 |
|
b)
|
| 6 |
|
c)
|
| 8 |
|
d)
|
| 10 |
|
|
|
|
|
|
| 19. |
The total number of equivalent quarter bends (360 degrees total) ) allowed in one run of rigid nonmetallic conduit
between pull points, conduit bodies, and boxes shall not exceed ____.
|
|
|
|
|
|
a)
|
| 2 |
|
b)
|
| 3 |
|
c)
|
| 4 |
|
d)
|
| 5 |
|
|
|
|
|
|
| 20. |
Where insulated circuit conductors of minimum size No. _____ or larger enter a raceway in a cabinet, the conductors shall be protected by an insulated fitting
or by threaded hubs or bosses.
|
|
|
|
|
|
a)
|
| 3 |
|
b)
|
| 4 |
|
c)
|
| 6 |
|
d)
|
| 5 |
|
|
|
|
|
|