Ch 2 - Hardware & Materials
length of white wire attached to it
A GFCI circuit breaker is easily recognizable by the 'push-to-test' button and the __________.
fuse
A ________________ is an overcurrent device that opens a circuit when a fusible link is melted away by the extreme heat caused by an overcurrent.
ON/OFF
A double-pole switch has _____ marked on the switch handle?
short
A low resistance path, which results in a high value of current that flows around, rather than through, a circuit is called a(n) __________ circuit.
knockout
A part of an electrical box that is designed to be removed so that a cable or raceway can be connected to the box is called a __________.
120, 240
A single-pole breaker is used on a circuit voltage of ___________ volts and a two-pole breaker is used on a circuit voltage of ___________ volts in residential wiring.
double-pole
A switch that is used on 240-volt circuits to control a load from one location is called a __________ switch.
outlet
A(n) _____________ is a point on the wiring system at which current is taken to supply equipment.
junction
All _______ boxes must be accessible after they are installed.
ground fault
An accidental connection of a "hot"conductor and a grounded piece of equipment or the grounded conductor is called a(n) __________.
copper copper-clad aluminum aluminum
CO/ALR marked on a receptacle indicates that __________ conductors may be terminated to it.
BX
Electricians often refer to Type AC cable as ____________________ cable.
copper
If a switching device has the marking CU ONLY on it, an electrician can use __________ wire with the device.
armored-clad metal-clad cable
In certain locations in the United States, the AHJ may not allow nonmetallic sheathed cable in residential construction. The alternative wiring method most often used is _____________.
20
In residential wiring, the NEC requires a __________-amp circuit breaker or fuse to be used with 12 AWG copper conductors.
authority having jurisdiction
It is the __________ who has the job of approving the electrical materials used for a residential electrical installation.
nonmetallic sheathed cable
Manufacturers of _____ are now color-coding their cables, which allows for ready identification of the cable size.
GFCI
On a _____ receptacle, the incoming power is connected to the line terminals
silver
On a duplex receptacle, the _____ screw is used to terminate the white grounded conductor.
nonmetallic sheathed cable
Romex is a trade name used by electricians to refer to __________.
tamper-resistant
Starting with the 2008 National Electrical Code and continuing in the 2011 edition almost all 15- or 20-amp, 125-volt receptacles in a house must be __________.
3, 10
The NEC requires rigid metal conduit to be supported within __________ feet of each box and then no more than every __________ feet thereafter. (general rule)
8
The National Electrical Code requires Type NM cable to be supported no more than __________ inches from single-gang nonmetallic device boxes.
attachment plug
The ______ is the device that is inserted into a receptacle to establish a connection between the conductors of the attached flexible cord and the conductors connected to the receptacle.
ampacity
The ________ of a conductor refers to its ability to carry current.
white
The __________ circuit conductor is used as the grounded conductor and returns current from the load back to the source.
American Wire Gauge
The __________ is a scale of specified diameters and cross sections for wire sizing and is the standard wire sizing scale for the United States.
National Electrical Manufacturers Association
The __________ is an organization that develops electrical equipment standards that all member groups follow when designing and producing electrical equipment.
brass
The ungrounded 'hot' conductor is terminated to the __________ terminal on a duplex receptacle.
UF
Type __________ cable is used for underground installations of branch and feeder circuits.
USE
Type __________ cable is used for underground service entrance installations.
12
When nonmetallic device boxes that are 2-gang or more are used, the installed Type NM cable must be supported no more than __________ inches from the box.
ganging
When two or more electrical device boxes are joined together for the purpose of holding more than one device it is called __________.
a larger
When using aluminum conductors, __________ size conductor must be used to carry the same amount of current as a copper conductor.
8 AWG
Which of the following conductors is the largest? 8 AWG; 10 AWG; 12 AWG; or 14 AWG
circuit breakers
__________ are the most often used type of overcurrent protection device used in residential wiring.
Type S
__________ plug fuses are considered non-tamperable and are used in new installations requiring plug fuses.
combination
_______________ devices are used when more than one device is needed at one location.
torque
____________________ is a measure of how much a fastener is being tightened and is measured in foot-pounds or inch-pounds.
edison base
_______________________ plug fuses cannot be used in new installations.
