In some cases, when using standard anodes, it may be beneficial to have a dedicated MGPS cathode to avoid any problems resulting from stray current corrosion.

This particularly applies where strainer bodies are internally lined and the metallic strainer basket is isolated. It is also advisable in situations where seachests are well painted and do not contain sacrificial anodes or where there is the need to avoid any interference with impressed current cathodic protection systems (ICCP). The cathode can be either isolated (dedicated) or connect to the ship’s earth.