In stringing operations, what is a bull-wheel primarily used for?

A bull-wheel is primarily used to place tension during stringing operations. In overhead power line construction, ensuring that the wire is tensioned correctly is crucial for maintaining the integrity of the line. The bull-wheel facilitates the controlled feeding of wire, helping maintain the necessary tension as the wire is strung from one pole to another. This control is essential to prevent sagging or potential damage to the wire, as well as to ensure that it fits properly into the intended installation structure, such as insulators or connectors.

While other tools might be used in stringing operations for different purposes, the bull-wheel's primary function is specifically related to the management and application of tension, which is critical for effective and safe line construction and maintenance. Ensuring proper tension helps mitigate risks associated with operating conditions, preventing excessive stress that could lead to failures or safety hazards for the workers involved.