What is the purpose of a safety wire through a turnbuckle used to tension guy lines?

• A. To increase the tension on the guy line
• B. Prevent loosening of the turnbuckle from vibration
• C. Ensure the guy lines do not sag
• D. Provide additional support for the turnbuckle

Answer: (B)

The purpose of a safety wire through a turnbuckle used to tension guy lines is primarily to prevent the loosening of the turnbuckle from vibration. When a turnbuckle is used to adjust and maintain tension in guy lines, it is subject to various forces, including wind and mechanical vibration. Over time, these forces can cause the turnbuckle to loosen, which can compromise the stability and effectiveness of the structure it supports.

By using a safety wire, you create an additional layer of security that keeps the turnbuckle tight and prevents it from accidentally loosening. This is especially critical in applications where reliable tension is necessary for safety and performance, such as in antenna support systems or towers. The safety wire effectively secures the adjustment mechanism and enhances the overall reliability of the installation.

Other options, while they may seem relevant, do not directly address the specific role of the safety wire. For instance, increasing the tension or ensuring the guy lines do not sag primarily refers to the function of the turnbuckle itself rather than the protective measure of the safety wire.