When a new power pole is needed — for a subdivision, network upgrade, or pole replacement — the first step is excavating the hole. This is called a pole hole.
What is a pole hole?
A pole hole is the bored or excavated opening in the ground into which a power pole is set. Dimensions depend on:
- The height and class of the pole
- Soil type (clay, rock, sand)
- The load the pole will carry
- The relevant DNSP construction standard
How are pole holes drilled?
Most NSW pole holes are drilled using an auger — a rotating bit on a truck-mounted or tractor-mounted rig. In rocky ground, rock-breaking equipment may be required. Hand-digging is used where machinery access is restricted.
How deep does a pole hole need to be?
As a general guide, poles are set to approximately one-sixth of their total length below ground plus 600mm. An 11-metre pole typically requires a hole around 2.4 metres deep. Exact depth is determined by pole class, load calculations, and soil conditions.
Pole setting and backfill
The pole is craned or lifted into position and set vertically. The hole is backfilled in layers with compacted soil or concrete depending on soil type and DNSP requirements.
Mackex Services carries out pole hole drilling, pole supply, and overhead network construction across NSW. Get in touch to discuss your next project.