What material should be avoided when selecting wiring for high-moisture areas?

• A. Copper
• B. Aluminum
• C. PVC
• D. Both copper and aluminum

Answer: (B)

In high-moisture areas, the selection of wiring material is crucial to ensure safety and reliability. Aluminum wiring should be avoided in such environments primarily because it is more susceptible to corrosion in the presence of moisture. When aluminum is exposed to moisture, especially when combined with other elements, it can oxidize, leading to the degradation of the wire over time. This oxidation can create a higher resistance at connections, increasing the risk of overheating and potential electrical failures.

Copper, on the other hand, is known for its superior conductivity and inherent resistance to corrosion, making it a better choice for environments where moisture is present. PVC insulation can also provide additional protection against moisture, helping to safeguard the electrical components from environmental factors. Thus, when it comes to high-moisture areas, choosing copper or insulated wiring options that are resistant to water damage is essential.