Why is proper torque important on conductor terminations?

• A. To speed up installation by using larger torque.
• B. To ensure a secure, low-resistance connection that minimizes heating, arcing, and loosening.
• C. To comply with color coding requirements.
• D. To allow for thermal expansion without loosening.

Answer: (B)

Applying proper torque on conductor terminations ensures a solid electrical connection with the right amount of clamping force. This keeps contact pressure high enough to maintain a low and stable resistance, which minimizes heat generation, reduces the risk of arcing, and prevents the connection from loosening over time due to vibration or thermal cycling. If torque is too low, the connection can become loose, resistance rises, heating increases, and arcing or failure can occur. If torque is too high, you can crush insulation, damage the conductor or terminal threads, and create a weak point that also risks failure. The goal is to achieve the manufacturer-specified torque to maintain safe, reliable performance. Torque values are not meant to speed up installation, address color coding, or rely on thermal expansion alone; they’re about ensuring a secure, low-resistance path for the electrical current.