True and False Questions
A receptacle located under a kitchen sink for a cord-and-plug-connected garbage disposal must be GFCI protected.
F
A steel fish tape should be used when pulling conductors through an installed conduit system and into an energized loadcenter.
F
A wire that has its origin inside a device box and does not leave the device box, such as a pigtail, counts as one conductor when computing box fill.
F
During the rough-in wiring phase, an electrician always routes cable through floors or ceilings, which provides shorter routes than do perimeter walls.
F
If a white conductor in a Romex cable is connected to a traveler terminal on a three-way switch, it does not have to be re-identified because it is not 'hot' all the time.
F
If the circuit grounding conductor is connected to the green grounding terminal on the switch, there is no need to ground the metal device box in which the switch is installed.
F
In a laundry room, receptacles must be placed so that no point along the wall is more than six feet from a receptacle.
F
In a sub-panel, the grounding bar and the neutral bar are electrically connected together so that the white grounded conductors and the bare or green grounding conductors can all terminate at the same location.
F
Like a four-way switch, a double-pole switch has four terminal screws and the toggle has 'On' and 'Off' written on it.
F
Suspended ceiling grids are permitted by the NEC to support nonmetallic sheathed cables.
F
Switch loops are not permitted in three-way switch circuits.
F
The NEC requires electrical boxes to be mounted so that they are flush with the finished surface of walls made of both combustible and noncombustible materials.
F
The most common receptacle type used in residential wiring is the single receptacle.
F
When self-grounding receptacles are used with nonmetallic device boxes there is no need to attach the circuit grounding conductor to the green screw on the receptacle.
F
A device or outlet box can also be used as a junction box.
T
A double-pole switch can be used to control two 120-volt circuits.
T
A feed-through GFCI receptacle can provide GFCI protection for regular receptacles installed 'downstream' on the same branch circuit.
T
A permanent black marker can be used to re-identify a white insulated conductor as a 'hot' conductor in a cable.
T
An electrician must cut a groove into a wood beam to run Romex to a certain location. If the groove is cut into the beam 1-1/8", a steel plate at least 1/16" thick is required to protect the cable.
T
Boxes for floor receptacles must be specifically listed for that purpose and no other box type can be used in a floor installation.
T
Conduit systems must be completely installed before the electrical conductors are permitted to be pulled in.
T
Electrical Metallic Tubing is permitted to be used as a service raceway.
T
Even though the NEC permits Type NM cable to be used in one- and two-family homes, it may not be approved for use in your area by the AHJ.
T
If a hole is bored into a stud and there is less than 1 1/4" between the edge of the stud, a steel plate at least 1/16" thick or a listed and marked steel plate that is less than 1/16" if it still provides equal or greater protection against nail or screw penetration, must be used.
T
In all areas specified in Section 210.52, all nonlocking type 125 volt, 15- and 20- amp receptacles must be tamper-resistant. (General Rule)
T
Nonmetallic device boxes used in residential wiring typically have both their cubic inch volume and the maximum number of 14, 12, and 10 AWG conductors marked on the box.
T
Romex is considered to be supported when it passes through bored or punched holes in framing members that are no more than 4 1/2 feet apart
T
Switches installed in metal boxes are considered grounded as long as the metal strap of the switch is touching the metal box after installation.
T
The NEC requires all device boxes installed to meet the requirements of Section 210.52 to be no higher than 5 1/2 feet but has no other rules regarding the mounting height of electrical boxes for switches or receptacles in residential wiring.
T
The receptacle installed for a clothes washing machine located in a laundry area of an unfinished basement or a bathroom must be GFCI protected.
T
The white wire used in a switch loop wired with a two-wire cable like Type NM must be re-identified. This is normally done with black tape.
T
When a white wire is used as a traveler conductor for three-way and four-way switching, it is required to be re-identified as an ungrounded conductor.
T
When computing box fill, each 14 AWG lighting fixture wire counts as one conductor.
T
When re-identifying a white insulated conductor as a 'hot' ungrounded conductor, the identifying mark must completely encircle the conductor.
T