What should be the distance between the pipe and the anodes?

The most effective cathodic protection systems ensure that the anodes are placed at a distance that allows for optimal current distribution to the structure being protected, which typically involves a remote distance. This helps to ensure that the electrical current from the anodes can adequately reach the pipe surface to provide effective protection against corrosion.

When anodes are positioned too close to the pipe, there can be an uneven distribution of the protective current. This may result in insufficient protection in some areas while overprotecting others. By maintaining a remote distance, the current can disperse in a more uniform manner around the pipe, enhancing the overall efficacy of the cathodic protection system.

It is important to consider that anodes placed too far away may also lead to decreased effectiveness, highlighting the importance of optimal placement. However, the key concept is that a remote distance typically allows for better current distribution, ultimately leading to more effective cathodic protection.