Testing & TroubleshootingQuestion 496 of 521
A receptacle reads 120 V hot-to-neutral but 0 V hot-to-ground. Neutral-to-ground also reads 0 V and the ground pin has no continuity to the panel. What is the fault?
a.Open equipment grounding conductor (open ground)
b.Reversed polarity
c.Open neutral
d.A bolted line-to-line short
Explanation
With hot-to-neutral normal at 120 V but hot-to-ground reading 0 V and no continuity from the ground pin back to the panel, the equipment grounding conductor is open. Reversed polarity (b) would still show voltage relationships swapped, an open neutral (c) would kill the hot-to-neutral reading, and a line-to-line short (d) would trip the breaker.
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