Which of the following represents a characteristic of an ungrounded electrical distribution system?

Correct Answer: Option A — Accidental contact between one line and ground does not cause an outage.

Ungrounded distribution systems, standard in marine 450VAC shipboard networks per 46 CFR Subchapter J, allow continuous operation during a single line-to-ground fault. Because no complete return path to ground exists, current cannot flow, preventing immediate equipment outages and enhancing continuity of ship service.