Question 54Electricity & Electronics - 1st Asst/Chief

The correct answer is B) Sewage Treatment Plant. The three-conductor cable with the smallest cross-sectional area is typically used for control circuits or instrumentation, which often have lower power requirements compared to larger motors or pumps. In a marine vessel, the sewage treatment plant is an auxiliary system that would likely have lower power demands than the main propulsion equipment or large cargo pumps. Therefore, the three-conductor cable with the smallest cross-sectional area would be the most appropriate choice to feed the sewage treatment plant. The other options, such as the SW Cooling Circ. Pump, Cargo Oil Transfer Pump, and Lube Oil Service Pump, are likely to have higher power requirements and would typically be fed by cables with larger cross-sectional areas to handle the higher current demands.