What is the recommended hole diameter for digging pole holes?

The recommended hole diameter for digging pole holes being three inches around the pole is based on the necessity for proper tamping and securing of the pole. This additional space allows for the insertion of backfill material and provides enough room for tamping, which is crucial for ensuring that the pole is stable and firmly anchored. This practice helps prevent shifting and leaning of the pole over time, which is important for the safety and integrity of the installation.

Having a diameter that is too small may restrict the ability to properly compact the surrounding soil, which can lead to instability. On the other hand, a diameter much larger than three inches might not provide substantial benefits for pole stability, making it unnecessary and potentially complicating the installation process.