Electrical 1st YR 2nd Q.
Receptacles for use on nominal 120-volt circuits are marked ___ volts.
125
An intentionally grounded circuit conductor commonly referred to as the neutral
Grounded Conductor (Gray & White)
Hospital grade receptacles can always be easily identified by what color dot?
GREEN
An equipment grounding conductor is permitted to have ___ insulation.
GREEN ONLY
An industrial-grade switch would be used for ___ applications.
HEAVY DUTY
The ungrounded conductor is often called the
HOT
Ungrounded is ___, Grounding is ____, and Grounded is ____ (Wire Names/ Colors)
HOT, NEUTRAL, GREEN
Snap switches with metallic yokes (straps) have a terminal for the equipment grounding conductor. Using this type of switch provides a means for grounding ___ faceplates when nonmetallic boxes are used.
METAL
112 (42 TERMS)
112 (42 TERMS)
113
113
Alternating current, general-use snap switches are UL-listed to control motors rated up to ___ horsepower.
2 HORSEPOWER
An insulated grounded conductor of 6 AWG or smaller shall be identified by a continuous white or gray outer finish or by ___ continuous white stripes on other than green insulation along its entire length.
4
Switches are rated for ___.
AC & AC-DC
The only switches that may be connected directly to aluminum wire are ___ switches.
CO/ALR
Devices intended to meet the demands of commercial & institutional settings
COMMERCIAL GRADE
A double-pole, single-throw switch has ___ screw terminals for the connection of current-carrying circuit conductors.
FOUR
Excluding any grounding terminals, a four-way switch has ___ terminal screws.
FOUR
If you need more than two switches to control a light, you will need at least one:
FOUR-WAY SWITCH
A device (female contacts) designed for fixed installation in a structure or piece of equipment to establish electrical connection with an inserted plug (male contacts).
RECEPTACLE
Devices that are ideal for new construction or replacement in any residential structure.
RESIDENTIAL GRADE
RFI is an abbreviation
Radio Frequency Interference
To convert a conventional duplex receptacle into a split-wired receptacle, the ___ is removed.
TAB
T/F The current flow to a 120-volt load travels through the source (typically a transformer winding). Assume this is a properly connected circuit.
TRUE
Section 404.2(A) in the NEC® requires that switching be done only in the ___ conductor.
UNGROUNDED
The purpose of the "break-off tabs" between the terminals on a duplex receptacle is to permit ___.
two circuits to be connected
At what mA or higher does a class A GFCI trip & what is the least mA at which it won't trip?
6mA & 4mA
Portable receptacle designed for attachment to or provided with flexible cord, not intended for fixed mounting
CORD CONNECTOR
(Most common type of receptacle) Two female contacts on a single yoke. Can be constructed to include GFCI & AFCI protection
DUPLEX RECEPTACLE
Devices meant for use in punishing environments like factories (& other industrial settings)
INDUSTRIAL GRADE
Transient voltage surge suppressors are used to minimize the damage to connected equipment caused by ___.
Line Surges & Spikes
Receptacle specifically constructed so that access to its energized contacts is limited. (Behind the receptacle slots there are a set of shutters that will block anything but the properly rated plug)
SAFETY/ TAMPER RESISTANT
A switch with a grounding clip, as shown below, will automatically bond a switch to the equipment grounding conductor when the switch is installed in a metal box that is connected to the equipment grounding conductor.
TRUE
The grounding terminal screw is electrically and mechanically connected to the metal yoke on a hospital grade receptacle.
TRUE
When installed as the neutral for a 120-volt circuit, the neutral is considered to be a current-carrying conductor
TRUE
Light switches (toggle switches) are rated for the maximum ___.
VOLTAGE & CURRENT
When a 20-amp, 120-volt multioutlet branch circuit is installed, which of the following receptacles is permitted to be connected to it?
15 OR 20 AMP
For branch circuits rated 120 volts, 20 amperes and supplying two or more receptacles, the receptacles are permitted to be rated ___.
15 OR 20 AMPERS
When a single receptacle is connected to a branch circuit (the circuit has no other loads), the receptacle must have an ampere rating ___ the ampere rating of the OCP protecting the branch circuit.
GREATER THAN OR EQUAL TO
What conductor in a circuit is permitted to be marked with a color of white or gray
GROUNDED ONLY
What does a bright orange triangle on then face of a receptacle mean?
Isolated- Ground Receptacle
If a receptacle has a NEMA designation that is L11-20R, this indicates that the receptacle can be mated with a ___-type plug attached to a flexible cord.
LOCKING
In multiwire circuits, the grounded conductor is also called a ___.
NEUTRAL
What kind of circuit always leaves & wants to return to the souce?
NORMAL CIRCUIT
Lighted handle toggle switches utilize a neon lamp that is illuminated when the switch is in the ___ position.
OFF
A device with an 11-30P NEMA designation indicates that this device is a ___.
PLUG
Device with male contacts intended for insertion into a receptacle to establish electrical connection to the attached flexible cord and to the conductors connected to the receptacle
PLUG
Receptacle that only accepts one plug
SINGLE RECEPTACLE
The "hot" conductor of a circuit is referred to as the ___ conductor in the NEC®.
UNGROUNDED
Circuit conductors and often referred to as hot or phase conductors.
Ungrounded Conductors (Any color except green, white, gray)
Receptacle device installed in locations exposed to & can withstand various weather extremes. (Rain, Sun, dust, etc.)
WEATHER-RESISTANT RECEPTACLE
What causes 120V circuits to trip, or open?
When the current levels in the ungrounded (hot) & grounded (neutral) conductor are not equal (LEAKAGE)
Structural frame of a receptacle or switch device that holds the equipment together & provides proper grounding. (Also used to mount boxes in their respective outlet boxes)
YOKE