Posted by Adirondack case guy on November 06, 2010 at 18:28:19 from (67.252.92.228):
On thursday this week I started construction on a new wind turbine. Weather hasn't been real cooperative. Any way I got as much ditch dug as I could before Concrete truck comes in to pour foundation. (don;t need him getting stuck in newly backfilled ditch) Mfrs. plans in heavy clay ground call for 2.5 yd concrete 2500# mix in a 2' Sonatube. I dig a square 5'X5'X 5' Hole and pour 5yds of 4000# mix in an undesterbed hole. I build a plywood form +- 1' above ground level, plus the 6" riser 2' square in the center. Math says 4.67 yds., Ordered 5y. 5yd is cuttoff for short loads so I might as well get the extra concrete, for added strength and mass. The ditch length is 218' plus risers at the garage and tower foundation. The wind turbine is phase 1 of a hybrid (wind/solar) generation system, So we are running AWG 4 two leg + N & continuious ground all the way back to the main breaker panal. The wind turbine supplies 240V electricity at the turbine head and the PV system will incorperate Micro Inverters which will do likewise when erected out by the turbine. Combined Max Output, 4400W rated @ 240V--35Amps combined. Each system is capable of achiving higher outputs in perfect conditions, but the probability of both systems peaking at the same time is remote. I have seen the wind turbines that I have installed deliver 2900 watts, 500w over rated output momentarly though. Here's some of the pics as of now. I will post the progress in days to come.
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