What type of wire is recommended for marine applications?

Tinned copper wire is recommended for marine applications primarily due to its excellent resistance to corrosion, which is a significant concern in a marine environment where wiring is often exposed to moisture, salt, and other harsh conditions. The tin coating provides a protective layer that helps prevent oxidation of the copper underneath, ensuring better conductivity and longevity.

Copper is preferred over aluminum because copper has better electrical conductivity, which is crucial in marine applications where efficiency is essential. The tinned aspect enhances durability without compromising the electrical performance, making it ideal for use in boats and other marine vessels.

In contrast, aluminum wire, while lightweight and cost-effective, does not perform as well in terms of corrosion resistance and can have issues with thermal expansion, leading to potential failures in connections. Plastic-coated wire may not provide the same level of protection or conductivity as tinned copper. Uninsulated copper wire lacks protection from environmental factors and should not be used where exposure to moisture is likely. Therefore, tinned copper wire is the optimal choice for ensuring reliability and safety in marine electrical systems.