Nature Power 2000W-48V Marine Grade Wind Turbine (70701) - Manual (Page 15)

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meets it). The total tower height must be sufficient to prevent accidents
with body or structures.
•The tower must withstand horizontal wind pressure of 231lbf(
(at
a wind speed of 49.2m/s, 110mph,177KPH).
105kgf)
•If unsure please consult with your local tower contractor for details.
9-3 Cable Diameter Sizes:
To select the appropriate cables gauge, measure the distance between
the turbine and the batteries. Make sure to include the height of the
tower. Please refer to the following wire gauge chart.
Distance between
the turbine and the
DPDT switch
Wire Gauge(2 cables per polarity)
Cross
Sectional
Area
Diameter
of the
cooper
core
AWG
#
Maximum
Total
resistance
(round & trip)
Up to 7mm(23ft)
Up to 15m(49ft)
Up to 30.5m(100ft)
Up to 46m(150ft)
5.5mm²
8.0mm²
21mm²
34mm²
2.64mm
3.19mm
5.19mm
6.6mm
10
8
4
2
0.022Ω
0.03Ω
0.024Ω
0.023Ω
NOTES:
•For the connection between the DPDT switch and the battery bank, you
can use the same double wiring per polarity as in the table. Alternatively
you can use a single cable AWG #6. In all the cases the cable between the
DPDT and the battery bank has to be no more than 3ft long.
•The DPDT blade switch included in the kit allows cables up to AWG # 4
easily. For the AWG # 2, perhaps you need to remove some of the wires
at the end of the cable to reduce its diameter or use a proper spade or pin
crimp terminal.
9-4 Inverters:
This device is used to convert the DC power from the battery to the
standard AC power used at home.
Verify the capacity and type of your inverter to ensure that it is appropriate
for the load you are using.
•Always use 48VDC inverters.
•Always use inverters equipped with battery (DC Input) overvoltage
protection circuit and battery low voltage (under voltage) disconnect
feature.