What is the recommended angle for placing an extension ladder against a wall?

The recommended angle for placing an extension ladder against a wall is approximately 75 degrees. This angle provides a good balance between stability and reach, ensuring that the ladder is positioned securely while allowing the user to climb safely. When the ladder is positioned at this angle, it minimizes the risk of slipping or falling, as the base will be far enough away from the wall to provide adequate support, yet close enough to maintain the proper center of gravity.

Using angles that are too steep, such as 90 degrees, can make the ladder top-heavy and increase the danger of tipping over. Conversely, a shallower angle, like 60 degrees, may not adequately support the user's weight or could slip sideways, making it harder to ascend and descend safely. An angle of 45 degrees is also too shallow for standard climbing practices, which could lead to instability.

By adhering to the recommended 75-degree angle, you enhance safety and efficiency while using the ladder for tasks such as electrical work or maintenance on elevated structures.