Exam 2: Electrical Symbols and Outlets

Name several factors that must be taken into account when sizing boxes per the NEC.

Unused knockouts in boxes, spaces for ____________________ in a panel, meter socket enclosures, and all other similar equipment must be effectively closed.

Device faceplates must be mounted so as to ____.

According to ____, unused knockouts and other openings in electrical boxes and cabinets are required to be closed.

Match the following switch types with their drawing symbols. -Three-way

The NEC requires that a(n) ____ be installed at each conductor splice connection point.

When doing ____________________ work, requirements for supporting and securing cables are relaxed so that the cables can be "fished" through the existing wall construction.

In walls or ceilings constructed of noncombustible material, such as concrete or tile, the edge of the outlet box is permitted to be set back not more than ____________________ from the finished surface.

What is meant by fire resistance rating?

Where noncombustible surface material is used on walls or ceilings, outlet boxes must be mounted so that they will be set back not more than ____ from the face of the surface material.

Device boxes are designed for size No. ____________________ screws.

A device's primary function is to ____.

A receptacle outlet is a(n) ____.

Match the following switch types with their drawing symbols. -Dimmer switch

How is an outlet defined by the NEC?

Explain the requirements for installing a lighting fixture weighing more than fifty pounds.

In order that the connections inside an outlet box remain accessible, the NEC requires that a surface extension from an outlet box cover be made using ____.

Lighting outlet boxes are designed for size No. ____________________ screws.

Match the following switch types with their drawing symbols. -Single-pole

Electrical wall boxes should not be mounted back-to-back in walls because ____.