Which two methods are commonly used to install EMT for residential wiring in walls?

The correct answer involves drilling holes and making notch cuts as the two methods commonly used to install Electrical Metallic Tubing (EMT) in residential wiring within walls.

Drilling holes allows electricians to pass the EMT through stud members and ensure it is secured and protected while running through walls. This method facilitates a clean installation that keeps the conduit secure and out of the way of other structural elements.

Notch cuts are also used on the edges of wooden studs where EMT needs to be installed. By making these cuts, electricians can create a snug fit for the conduit, preventing it from projecting out further than necessary and protecting it from potential physical damage. This method contributes to compliance with electrical codes, which emphasize the importance of safeguarding wiring against damage from nails or other penetrations in the wall.

These two methods of installation ensure that the EMT is not only functional but also maintains a level of safety and compliance with building regulations. The other options do not provide the same effectiveness or reliability in securing the conduit within the wall framework.