When it was first introduced in branch circuit wiring the wire was used in a different manner than copper. Because of the rising cost of copper during the 1960's mid-century the use of aluminum wire became more widespread in the wiring of homes. It was understood in the 1960's that aluminum wiring needs a larger gauge wire than copper wire to be able to carry the same amount of current.
For instance, a standard 15-amp circuit breaker that is wired with no. 14 gauge copper needs. 12 gauge aluminum. The typical connections of electrical wires and electrical equipment, often known as terminals, are typically constructed through wrapping wires around screw terminals before pulling the wire tight or pushing the wire into the outlet's back.
In time the majority of these connections to aluminum wire started to fail because of improper connections and the use of different metals. The failures of connections caused the electrical charge and caused overheated connections.
The history of Aluminum Wire
Electricity is transferred from generators for the utility to individual meters by using a majority of aluminum wire. The U.S., utilities have utilized aluminum wire for more than 100 years. It requires only one pounds of aluminum to reach the capacity of 2 pounds of copper. Conductors that are lightweight allow the utility to operate transmission lines using only less support structures.
The utility system was designed specifically for aluminum conductors the utility's installers are well-versed with the installation methods for the various types of aluminum conductors utilized to power utility installations.