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Exam 5: Conductor Identification Switch Control of Lighting Circuits Bonding Grounding of Wiring Devices Induction Heating

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Question 1

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The common point on a wye-connected polyphase system or the mid-point on a single phase system is the _________________________.

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Question 2

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Alternating current, general-use snap switches are UL-listed to control motors rated up to ____ horsepower.

A) 1/2
B) 3/4
C) 2
D) as marked on the switch

E) B) and C)
F) A) and C)

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Question 3

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From how many locations does four-way switching allow a lighting outlet to be controlled?

Name at least four kinds of lighting switches.

The conductors that run between a switched outlet and the switch controlling the outlet are called a(n) ____________________.

In older existing installations, where an equipment ground does not exist in a metal switch box that is located within reach of a conductive floor such as tile or cement, NEC 404.9(B) requires the use of what kind of faceplate?

To avoid inductive heating in metallic raceways, the NEC requires that ____.

Specify the maximum overcurrent protection permitted for following the circuit conductor sizes:

When is a reidentified white conductor NOT permitted?

Phase conductors 6 AWG and smaller ____ permitted to be re-identified as equipment ground conductors using green paint, tape, or other effective means.

Describe what NEC 250.148 requires to maintain the continuity of the equipment grounding path.

All 125-volt, 15- and 20-ampere receptacles in a dwelling are required to be ____.

On isolated ground receptacles, the metal yoke ____ integrally bonded to the equipment grounding terminal of the receptacle.

The NEC requires that switching be done only in ____ conductors.

When receptacles or switches have No. 6-32 screws secured to them with small pieces of cardboard, these pieces of cardboard must be ____ when the wiring device is installed in a metal outlet box.

The long slot on a 15-ampere, 125-volt, receptacle is the ____ conductor.

The grounded (identified) conductor of 6 AWG or smaller must have an outer finish that is ____.

Screwless push-in terminals (i.e., back wiring holes) on receptacles are listed only for use with what type of branch-circuit conductor?

A 4-way switch does not have "ON" and "OFF" markings. Four-way switches are connected to the "____________________" between two 3-way switches. One 3-way switch is fed by the ____________________; the other 3-way switch is connected to the load.

Snap switches with nonmetallic 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.