What component is NOT typically included in a galvanic anode system?

In a galvanic anode system, the main function is to utilize the electrochemical potential between the anode material and the cathodic structure to provide protection from corrosion. The key components involved in this system include the anode material, which serves as the sacrificial element and corrodes preferentially, connection cables to connect the anodes to the structures being protected, and in some cases, corrosion inhibitors that can enhance the overall effectiveness of the corrosion protection.

The rectifier, on the other hand, is not a typical component of a galvanic anode system. Rectifiers are used in impressed current cathodic protection systems, where an external power source is required to drive current through anodes to protect a structure. In contrast, galvanic systems rely solely on the natural electrochemical reactions of the anode materials without the need for external power sources, making the rectifier unnecessary in this context. This distinction is crucial for understanding the different types of cathodic protection systems and their respective components.