Polyester-enameled aluminum wire, also known as PEW, is quickly becoming the preferred choice for electricians and engineers due to its superior electrical and mechanical properties. This type of wire is made by coating the aluminum wire with a thin layer of polyester enamel, which provides durable insulation that protects the wire from damage and prevents electrical leakage.
The advantages of PEW over traditional copper wiring are numerous. For one, aluminum is lighter and less dense than copper, making PEW easier to handle and install. In addition, aluminum has a higher conductivity rating than copper, which means that less of it is needed to carry the same amount of current. This makes PEW ideal for applications where weight and space constraints are an issue, such as in aircraft and other aerospace applications.
Another advantage of PEW is its higher temperature resistance. Traditional copper wire can become brittle and break when exposed to high temperatures, while PEW is able to maintain its structural integrity and electrical conductivity even at high temperatures. This makes it suitable for use in applications such as motors and transformers, where high temperatures are common.
In addition to its physical properties, PEW also offers benefits in terms of cost and sustainability. Because aluminum is more abundant than copper, PEW is less expensive to produce. In addition, aluminum can be recycled more easily than copper, making it a more environmentally friendly choice.
Despite its many advantages, PEW is not without its drawbacks. One concern is that the polyester enamel insulation can become brittle over time, which can lead to cracks and electrical leakage. However, advances in polymer technology have led to the development of new types of polyester enamels that are more durable and less prone to cracking.
Another concern is that PEW can be more difficult to terminate than traditional copper wire. This is because the aluminum wire is more difficult to crimp and solder than copper, which can make it challenging to make a secure connection. However, new tools and techniques have been developed to overcome this issue, and many electricians and engineers are now trained to work with PEW.