A current-carrying conductor making...

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Question 1 of 205eccefa4bacbc34ba4d483ca

A current-carrying conductor making electrical contact with a wiring conduit will be indicated by a change on the switchboard from the norm. Assuming that the distribution system is an ungrounded system, what will change?

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🔍 Key Concepts

• Ungrounded electrical distribution system behavior during a single ground fault • Purpose and indication method of ground detecting lights on a switchboard • How a wattmeter and voltmeter respond to a single line-to-ground contact in an ungrounded system

💭 Think About

• In an ungrounded system, what is supposed to happen to service continuity if one conductor accidentally contacts ground or conduit? • Which indicator on the switchboard is specifically designed to show a ground fault on one line, and how would its brightness change compared to normal? • Would a single conductor touching the conduit significantly change real power (watts) being used by the ship’s load, or mainly affect how voltages are distributed to ground?

✅ Before You Answer

• Review how a normal three-lamp ground detector pattern looks on an ungrounded system (all lamps equally bright). • Consider what happens to the lamp on the faulted phase versus the lamps on the healthy phases when one line is grounded. • Confirm whether a simple ground on one phase should cause a noticeable change in total watts or line-to-line voltage, or mostly change the indication relative to ground.

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