How much exposed electrical wiring is considered a deficiency?

• A. One inch
• B. Half inch
• C. Quarter inch
• D. Three inches

Answer: (B)

Exposed electrical wiring is a safety hazard because a bare conductor can be touched, damaged, or arced, risking shock or fire. NSPIRE uses a specific limit to decide when that exposure counts as a deficiency: if any portion of conductor is exposed longer than half an inch, it is considered deficient. This small threshold reflects how even a short amount of uninsulated wire can pose danger in everyday conditions. Shorter exposures, like a quarter inch, typically aren’t flagged, while longer exposures would be flagged as deficiencies. So the boundary the standard uses is half an inch.