Nature Power Marine Grade 400 Watt Wind Turbine (70500) - Manual (Page 8)

The Wind Generator should be mounted on a tower a minimum of 25'
(8 meters) above any surrounding objects within a 500' (150m) radius.
If this is not possible, then place it as high as you can. If this is a roof
top installation, it is important there are no objects around the structure
that may block the wind.
5. TOWER
Great care should be taken in the selection and preparation of the wind
generator's tower, as this is the most difficult and crucial aspect of the
entire installation. If you select a tower from another source or build your
own, you are responsible for assuring the tower is suitable. As with all
towers, you must first evaluate your site to determine the appropriate
tower height, available space and reasonable cost.
Usually, the higher tower is erected, the greater the output, but also the
greater cost and effort of the installation. If purchasing a taller tower will
provide significantly more power it might offset the additional cost and
effort. It's very important to mount the wind generator in the best winds
while being balanced by the cost and effort of the installation.
This Wind Generator is designed to use steel pipe 1.875 inch (48mm)
outside diameter, equivalent to 1 ½ inch SCH 40 pipe, which can be used
in some tower applications. If larger pipe is used for your tower, make
sure that the 1.875 inch pipe is at least 22 inch long or will damage the
blades. Refer to SPHERE OF OPERATION (Minimum Safe Pole Length
Above Obstructions).
CAUTION: SAFETY, ENGINEERING AND LOCAL CODES MUST BE
ADDRESSED BEFORE ATTEMPTING ANY INSTALLATION.
NOTE: The yaw wires can support loads up to a total of 155 lbs. (70kg).
If the wire weight is higher, you must install a strain relief to minimize
the stress put on the hanging wires.
NOTE: Towers must be capable of withstanding 155 lb. (70kg) of load
in the horizontal direction at the Wind Generator.
The following list considerations must be consulted:
Number of Wind Generators
Budget
Type: guyed, freestanding or rooftop
Site: hills, trees, buildings
Ease of use
Note: Guyed And Freestanding Towers Are The Most Common Way To Install A
Wind Generator. These Towers Are Available In All Shapes, Sizes And Costs.
Caution: Do Not Install The Wind Generator Where The Path Of The
Blades Can Be Reached During Normal Operation! Never Approach
The Wind Generator During Operation!
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