chapter 1
Which of the following protects the motor against dangerous overheating due to overload and failure to start.
Overhead service conductors shall be installed beneath openings through which materials may be moved, such as openings in farm and commercial buildings
False
NEC Code 230.9(C)
The front edge of the cabinets situated in walls constructed of noncombustible materials such as concrete and tile must be within ____ of the finished surface:
6 mm
NEC Code 312.3
Lighting track or pendent shall not be located within a zone measured ____ vertically from the top of a bathtub rim:
8 ft
NEC Code 410.10(D)
Receptacles are not permitted less than ____ from the inside walls of a storable pool
6 ft
NEC Code 680.22(A)(1)
The greatest root-mean-square (rms) difference of potential between any two conductors of the circuit:
Voltage
Service conductors installed in conduit under _____ of earth beneath the building are also considered outside the building
18 inches
NEC Code 230.6(4)
The radius of curvature of inner edge of any bend must be at least ____ times the diameter of the service entrance cable:
5
NEC Code – 338.24
Recessed or surface-mounted luminaires and recessed exhaust fans may be located within 8 ft from vertically from the top of a bathtub rim:
True
NEC Code 410.10(D)
The fire alarm circuit disconnect shall be permitted to be secured in the __ position.
ON
NEC Code 760.41(A)
The circuit conductors between the final overcurrent device protecting the circuit and the outlet(s)
Branch Circuits
Conductors run above the top level of a window shall have a vertical clearance not less than the 3 feet:
False
NEC Code 230.9(A) Exp
In damp and wet location, a minimum of ____ air space between the enclosure and the wall or other supporting surface is required:
6 mm
NEC Code 312.2
Lamp tie wires, mounting screws, and decorative bands on glass spaced atleast _____from lamp terminals shall not be required to be grounded:
1.5 inches
NEC Code 410.42
The branch circuit supplying the fire alarm equipment(s) shall supply no other loads.
True
NEC Code 760.41(B)
The common point on a wye-connection in a polyphase system or midpoint on a single-phase system
Neutral
The connections that depend on solder shall not be used for connecting the terminals of service conductors:
True
NEC Code 230.81
Galvanized steel and stainless steel RMC can be used under all atmospheric conditions, within all types of occupancies:
True
NEC Code 344.10(A)(1)
Lampholders near Combustible Materials shall be constructed, installed or equipped with shades or guards such that the combustible material is not subjected to exceed the temperature of about ____
90
NEC Code 410.97
All metal raceways and all non-current-carrying metal parts of fixed and portable electrical equipment, regardless of voltage, installed in a motor fuel dispensing facility shall be grounded and bonded.
True
False
True
NEC 514.16
Rendered inaccessible by the structure or finish of the building.
Concealed
Where it is impracticable to locate the service head or gooseneck above the point of attachment, the service head or gooseneck location shall be permitted not farther than _____ from the point of attachment.
24 inches
NEC Code 230.54(C) Exp
The minimum approved electrical trade size for RMC is _____:
0.5 inches
NEC Code 344.20(A)
In case of the conductors supplying several motor and other loads, the conductors ampacity shall not be less than ____ of the continuous non motor load:
125%
NEC Code 430.24 (4)
In a nonventilated commercial garage, classified as a "minor repair garage," a receptacle outlet is being installed two feet from an unventilated pit. In this installation, the area above the floor up to a level of ? is a Class I, Division
18"
511.3(c)