This depends upon the location, winds, soils, and size of the unit. For example, a 5 kW unit with a 37 FOOT pole, should have ANOTHER 10feet in concrete underground. If it is planted in sand or marshy LANDS, it will need a deeper hole. If in solid rock, it can have a smaller hole. Most installers will determine this in the installation process. A 10 KWH turbine with a taller pole WOULD require a deeper hole. Some are not put in poles, but are put on roofs or braced on the side of buildings.

This depends upon the location, winds, soils, and size of the unit. For example, a 5 kW unit with a 37 foot pole, should have another 10feet in concrete underground. If it is planted in sand or marshy lands, it will need a deeper hole. If in solid rock, it can have a smaller hole. Most installers will determine this in the installation process. A 10 kWh turbine with a taller pole would require a deeper hole. Some are not put in poles, but are put on roofs or braced on the side of buildings.