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Exam 11: Cable Installation

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Question 21

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Section 334.80 covers the ampacity of Type NM cable.It states that even though the cable's insulation is rated at 90°C (194°F) the allowable ampacity of the cable is taken from the _____°C column in Table 310.15(B)(16).

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Question 22

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During the rough-in wiring phase, an electrician always installs cable through floors or ceilings, which provides shorter routes than do perimeter walls.

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Question 23

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Service entrance cable with an uninsulated conductor (Type SEU) is permitted to be used as the branch circuit wiring method for an electric range.

When unrolling cable from a coil, the best way is to pull the cable out of the coil from the __________.

The NEC requires at least __________ of free conductor in electrical device boxes for connection to switches and receptacles.

A "homerun" may enter a loadcenter through knockouts in the back, sides, top, or bottom of the loadcenter.

The insulated anti-short fitting that is required to be installed in the ends of Type AC cable to protect the wires from abrasion is typically called a(n) __________.

In single-gang nonmetallic electrical device boxes, at least __________ of the Type NM cable sheathing must extend into the box.

When installing Type MC cable in a house, an anti-short bushing (red head) is required at each end to provide protection for the conductors from the sharp edges of the cable armor.

The part of a branch circuit that originates in the loadcenter and provides electrical power to the first electrical box in a circuit is called a __________.

The inner edge of any bend in Type NM cable cannot be less than __________ times the cable diameter.

Type NM cable is considered to be supported when it passes horizontally through bored or punched holes in framing members that are no more than 4-1/2 feet apart.

Suspended ceiling grids are permitted by the NEC to support nonmetallic sheathed cables.

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.

If a cable is placed in a notch in wood studs or other wood framing members, a steel plate at least ____________________-inch thick must be used to protect the cable.

Type MC cable containing four or fewer conductors sized 14, 12, and 10 AWG must be secured within 12 inches from every box and then must be supported at intervals not exceeding __________.

Type NM and Type UF cables must have their cable sheath extend into nonmetallic boxes and beyond any cable clamp at least 1/2 inch (6 mm).

Type NM cable is often purchased in __________-foot rolls that are packaged in plastic wrapping or in cardboard boxes.

List the type of protection that must be used when installing Type NM cable through bored or punched holes in metal studs.

Which of the following cables are not permitted to be secured directly to the bottom edge of joists in an unfinished basement?