What must be provided for aluminum raceways and similar equipment in terms of protection?

For aluminum raceways and similar equipment, supplementary corrosion protection must be provided to ensure their longevity and safety. Aluminum is susceptible to corrosion in certain environments, particularly when in contact with other metals or when exposed to moisture. This corrosion can lead to compromised structural integrity and electrical conductivity, potentially resulting in equipment failure or safety hazards.

Supplementary corrosion protection can include coatings, finishes, or specialized treatments that enhance the material’s resistance to the corrosive effects of environmental elements. This is particularly important in applications where aluminum raceways may come into contact with corrosive substances or aggressive environments.

While the other options may have their own benefits in specific scenarios, they do not specifically address the unique needs for protecting aluminum raceways from corrosion effectively. Regular painting, for example, may not provide a long-lasting solution, and insulating covers or weatherproof sheathing do not inherently offer the corrosion protection that aluminum requires.