Substation Technician Certification Practice Exam

The correct distance for the tails to project beyond the last full tuck in 3/4" rope is 6 rope diameters. This recommendation is based on ensuring that the knot or tuck is secure and minimizes the risk of it coming undone under load. The longer the tail extends beyond the knot, the greater the security and strength of the configuration because it provides increased friction and stability.

When working with ropes, especially in applications like rigging or binding, following proper guidelines for tail length is crucial to prevent slippage and potential failure. Ensuring that the tails extend to 6 diameters offers a safe margin that accounts for variability in load, wear, and other factors that may affect the integrity of the knot.

In practice, shorter tail lengths might not provide sufficient security, leading to the possibility of the knot failing under strain. Therefore, adhering to the 6-diameter rule is a best practice for technicians working with ropes and knots.