Exam 6: Wiring Methods

A(n)____ box is used for surface or concealed installations.

The two most popular types of PVC are Schedule 40 and Schedule ____.

____ is a thin-wall metal raceway that is not permitted to be threaded.

Of what must you be especially careful regarding the depth of the box you are using?

Where PVC conduit is connected to a box or enclosure, a ____ is recommended.

Flexible metal and nonmetallic conduit are commonly used to connect recessed or lay-in ____. When used in this manner, electricians refer to it as a "fixture whip."

Liquidtight flexible nonmetallic conduit marked as ____ has a smooth seamless inner core and cover bonded together and one or more reinforcement layers between the core and covers for layered conduit .

When pulling three conductors or cables into a raceway, if the ratio of the raceway diameter to the conductor diameter is between 2.8 and 3.2, jamming can occur. With ____ or more conductors or cables, jamming is highly unlikely.

What factors cause losses in ferrous raceways in an ac circuit?

When may liquidtight flexible metallic conduit be used?

Type MC cable is a factory assembly of one or more insulated circuit conductors with or without optical fiber members enclosed in an armor of ____ metal tape, or a smooth or corrugated metallic sheath.

"Inverse time" refers to the speed of opening of ____.

Voltage drop in a circuit is calculated by multiplying the current flow times the ____.

What is a running thread, and how can it be used?

Compression fittings for EMT are classified as raintight and ____-tight types.

When a box contains fittings such as luminaire studs, clamps, or hickeys, the number of conductors permitted in the box is one less for ____ device.

Conduit bodies are often referred to in the trade as "Condulets" and "____."

On what factors do the conduit and tubing size required for an installation depend?

____ boxes are used primarily to install ceiling outlets.

The term ____ is defined by the NEC as a channel that is designed expressly for holding wires, cables, or busbars.