When installing galvanic isolators, what should be ensured about AC power inlets and telecommunication inlets?

When installing galvanic isolators, ensuring that AC power inlets and telecommunication inlets are electrically isolated from the hull and deck is crucial. This isolation helps to prevent stray currents, which can cause galvanic corrosion. Galvanic corrosion occurs when there is an electrical connection between dissimilar metals in a conductive medium, such as seawater, which can lead to significant damage over time.

By keeping these inlets isolated, the galvanic isolator can effectively reduce the path for stray currents that could otherwise flow through the vessel's structure and into the surrounding water. This is particularly important in marine environments where different metals are often used in boat construction, and where connections to the shore-based electrical systems increase the risk of unwanted current flow.

The other options do not address the critical aspect of isolation necessary to prevent corrosion. While grounding, proper connection to the main grid, and insulation from water exposure may be relevant in specific contexts, they do not specifically mitigate the risks associated with galvanic currents the way electrical isolation does.