how deep is a power pole buried
The standard utility pole in the United States is about 40 ft (12 m) long and is buried about 6 ft (2 m) in the ground. However, poles can reach heights of 120 ft (37 m) or more to satisfy clearance requirements.
Best Answer: A 20 foot pole set in firm soil goes in 4 feet. A 40 foot pole, 5 1/2 feet get buried. A 50 footer in 6 1/2 feet. Tops out at 8 feet buried for an eighty foot tall pole. That's for firm soil. Rocky soil is a bit shallower. Talk to your power provider before doing any digging around power poles.
First the power poles. 30 and 35 foot poles are set 6 foot deep. Add an extra 1/2 foot for every 5 foot of pole above 35 foot. My preference around the farm is underground. All it takes is to be involved with one electrical accident on a farm and you will never want overhead around bins and barns ever again.