If you detect a harmful 250mA DC galvanic current from the boat's ground to the dock ground, what is true regarding galvanic isolators and shore-power polarization transformers?

If you detect a harmful 250mA DC galvanic current from the boat's ground to the dock ground, what is true regarding galvanic isolators and shore-power polarization transformers?

• A. Both statements are TRUE
• B. Both statements are FALSE
• C. Statement A is TRUE; Statement B is FALSE
• D. Statement A is FALSE; Statement B is TRUE

Answer: (C)

In the context of the question regarding the detection of harmful galvanic currents from a boat's ground to the dock ground, a proper understanding of galvanic isolators and shore-power polarization transformers is essential. Galvanic isolators are devices specifically designed to break the galvanic path between the vessel and the shore power system. They allow AC power to flow to the boat while effectively preventing DC currents caused by galvanic corrosion from flowing between the vessel and the shore ground. When a harmful 250mA DC galvanic current is detected, it indicates that the galvanic isolator is not functioning adequately or is improperly installed. This situation requires immediate addressing since the presence of galvanic current poses a risk of corrosion to the vessel's submerged metals. On the other hand, shore-power polarization transformers are designed to mitigate certain types of electrical problems but are not typically utilized to manage galvanic corrosion directly. They can help in isolating the electrical supply, providing a level of protection against electrical shock and allowing safe connection to an electrical source, but they do not serve the specific purpose of blocking galvanic currents. Thus, understanding that galvanic isolators serve to prevent the unwanted flow of galvanic currents while polarization transformers do not fulfill this role is key to arriving at

In the context of the question regarding the detection of harmful galvanic currents from a boat's ground to the dock ground, a proper understanding of galvanic isolators and shore-power polarization transformers is essential.

Galvanic isolators are devices specifically designed to break the galvanic path between the vessel and the shore power system. They allow AC power to flow to the boat while effectively preventing DC currents caused by galvanic corrosion from flowing between the vessel and the shore ground. When a harmful 250mA DC galvanic current is detected, it indicates that the galvanic isolator is not functioning adequately or is improperly installed. This situation requires immediate addressing since the presence of galvanic current poses a risk of corrosion to the vessel's submerged metals.

On the other hand, shore-power polarization transformers are designed to mitigate certain types of electrical problems but are not typically utilized to manage galvanic corrosion directly. They can help in isolating the electrical supply, providing a level of protection against electrical shock and allowing safe connection to an electrical source, but they do not serve the specific purpose of blocking galvanic currents.

Thus, understanding that galvanic isolators serve to prevent the unwanted flow of galvanic currents while polarization transformers do not fulfill this role is key to arriving at