Question 393Electricity & Electronics - Assistant Engineer

The correct answer is C) 100 volts. According to 46 CFR Subchapter J, receptacle outlets operating at or above 100 volts are required to have grounding poles. This is specified in the regulations to ensure adequate electrical safety for higher voltage systems. Outlets operating below 100 volts, such as 24 volts (A) or 48 volts (B), do not have the same grounding requirements under the Coast Guard regulations. Outlets at 220 volts (D) would also require grounding poles, but this voltage exceeds the 100-volt threshold specified in the regulation.