Electronic – Can the ocean be used as ground


When grounding a tall tower in a rocky island, can we just throw a couple naked cables in the sea? If not, why not?

Please provide real-world examples if known.

Best Answer

In principle, yes - all you need is a sufficiently good connection to ground, and saltwater will certainly provide that. Single Wire Earth Return power transmission systems can use this for return power; they usually use titanium grid electrodes to prevent corrosion.