The use of anti-oxidant on the lugs is:

Using an anti-oxidant on the lugs is considered a recommended practice among many professionals in the electrical and building inspection field, but it is not strictly necessary for all scenarios. The application of anti-oxidant compounds helps to prevent corrosion on aluminum lugs, improving conductivity and ensuring a more reliable electrical connection. While it's beneficial and often advisable, it is not an absolute requirement and therefore does not constitute a defect in the inspection context if it has not been applied.

This is important as it reinforces the understanding that while certain practices, such as the application of anti-oxidants, enhance system longevity and performance, the lack of such application does not inherently indicate a problem. Inspectors might note that the use of anti-oxidant is preferred, but they recognize that not every installation must include it to be deemed acceptable. The approach to assessing this practice is based on context and the specific requirements of different installations.