What specific care must be taken when making connections with aluminum wiring?

When working with aluminum wiring, it is crucial to address the potential for oxidation, which can create resistance and lead to overheating at connection points. Applying an oxidizing agent helps mitigate this issue by facilitating a better connection between the aluminum wire and any connectors or terminals, thereby preventing oxidation buildup over time.

Aluminum has a tendency to form an oxide layer that can impair conductivity, so using an appropriate compound designed for aluminum connections enhances the reliability and safety of the wiring system. Proper care in connections also includes ensuring that they are torqued correctly and using connectors that are rated for aluminum wire. This not only promotes better electrical contact but also helps in reducing the risk of fire hazards associated with poor connections in aluminum wiring.

In contrast, the other options do not adequately address the unique properties and concerns associated with aluminum wiring. Avoiding all connections is not practical or necessary, as connections are often essential in electrical systems. Using lower amperage ratings isn't inherently required for aluminum wiring if connections are made correctly, and replacing all wiring with copper could be unnecessary and costly, given that aluminum is widely used in many applications when properly handled.