Branch-circuit conductors at outlet boxes are required to have at least____inches of free length for making splices and connections.

• A. 4"
• B. 6"
• C. 8"
• D. 12"

Answer: (B)

The thing being tested is having enough slack inside a box to safely make splices and terminations. Six inches of free conductor length gives enough room to twist or wirenut a splice, add pigtails if needed, and still have enough conductor length to reach the device terminals or clamps without putting stress on the wires. This length helps ensure secure, accessible connections and keeps within typical box-fill and termination requirements.

Four inches is usually too short for a reliable splice and pigtail. Eight inches is more than necessary for standard boxes and can crowd the space, though larger boxes might accommodate more. So the practical, code-friendly length is six inches.