In which areas is AAC the preferred conductor for substation equipment connections?

AAC, or All Aluminum Conductor, is preferred in coastal areas primarily due to its resistance to corrosion. Coastal environments are characterized by high humidity and salt-laden air, which can accelerate the degradation of materials, particularly those comprised of copper or certain alloys. The aluminum used in AAC does not corrode as quickly when compared to other metals, making it a more suitable choice for installations in these harsh conditions.

In addition to corrosion resistance, AAC has a good strength-to-weight ratio, which allows for longer spans and lighter structures in coastal applications where wind loads can be significant. Its performance in these environments ensures reliable connections for substation equipment, minimizing maintenance and replacement costs over time.

While other areas may have their own specific needs and considerations, the unique challenges presented by coastal environments strongly favor the use of AAC for its durability and longevity against corrosive elements.