To allow for adequate conductor length at electrical outlets and device boxes, the code requires not less than how many inches of conductor length be provided?

• A. 4 in. (100 mm)
• B. 6 in. (150 mm)
• C. 8 in. (200 mm)
• D. 10 in. (250 mm)

Answer: (B)

Having enough conductor length extending from outlets and device boxes is essential for safe, reliable terminations and future work. The standard requires not less than six inches of conductor to be provided, which gives room to reach and secure the wires, make any necessary splices or pigtails, and arrange the conductors without sharp bends that could damage insulation. This slack also accommodates proper strain relief and any future changes or device replacements without pulling on the box connections. Four inches is typically too short for safe terminations, while eight or ten inches adds more slack than usually needed. Six inches is the appropriate minimum.