What is considered a primary factor in assessing the impacts of installing a galvanic isolator?

The primary factor in assessing the impacts of installing a galvanic isolator is the impact on cathodic protection. Galvanic isolators are designed to prevent stray currents from adversely affecting a vessel's cathodic protection systems. This is crucial because cathodic protection relies on the flow of a small amount of current to provide a protective charge that prevents electrolysis and corrosion of underwater metals.

By installing a galvanic isolator, you can help ensure that the protective anodes are effectively providing their intended service without interference from other electrical systems, which could diminish their effectiveness and lead to corrosion of the vessel's hull and components. Therefore, understanding how a galvanic isolator will affect the existing cathodic protection system is essential for maintaining the longevity and safety of the vessel.

Other factors, such as cost, frequency of operation, and wiring distance, are relevant in broader considerations of system design and installation but do not directly address the primary function and impact of the galvanic isolator in the context of cathodic protection.