What device provides stability for a pole and keeps it from sinking into the ground?

The appropriate choice for a device that provides stability for a pole and prevents it from sinking into the ground is the pole key anchor. This device secures the pole in place, distributing the load and providing additional resistance against downward forces. Proper installation of a pole key anchor helps ensure the pole remains upright and stable, especially during adverse weather conditions or when subjected to lateral forces, such as wind.

While other options like ground braces and dead end guys contribute to the overall stability of poles and structures, they serve different specific functions within the support system. Ground braces are primarily used to stabilize the pole laterally rather than prevent sinking, while dead end guys are often employed to support wires at points where they change direction or are terminated but do not address the issue of the pole sinking into the ground.

Understanding how the pole key anchor functions in maintaining pole stability is essential for effective and safe installation in outside plant design.