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Connecting Your Turbine
PMA's <Std. Series>      Super Core PMA's


Connecting your EAGLE Turbine:

Basic Info
These turbines put out unregulated DC voltage. The unit for example will put out 62 volts & 700watts with a 30 MPH Wind. Amperage is Watts/Volts = 700/62 =11.29 Amps.

The first thing to understand is that batteries don't care about voltage. They can be hooked up to 220 volts without any problems. The only thing a battery needs is amperage. Amperage is what charges the battery. Voltage is equivelant to pressure in a water pipe. The voltage/pressure helps get the amperage/water into the battery. The rate the battery is charged is only determined by the amperage that is going into it. So, even if the Eagle puts out 92 volts @ 60 MPH (1000 watts - per chart), The battery is never effected by the voltage. So the amperage is 1000/92 = 10.87 Amps. The battery will receive 10.8 amps per hour at that approximate wind speed. Looking at the Eagle turbine charts you will notice that the HT1M produces many more amps @ 10 MPH than the HT2M. The chart reads appx. 16 volts, 150 Watts. Therefore the amperage is 150/16 = 9.375 Amps. You quickly notice that the HT2 does not give you near as much amperage when using a 12 volt battery (5.2 Amps).

Another Major thing to remember, besides that the high voltage output of the turbine has no effect on a battery, is that too low a voltage will not charge a battery. If you have a 12 volt battery bank, you will need 12 volts or more in order for the battery to start charging. (24 volt battery needs a mininium of 24 volts to start charging) Anything under the 12 volt rating will not do anything for you.

New/Old Battery

When a battery gets overcharged, or if it sits around and looses its charge and does not get charged back to normal, it will begin sulfating the plates. This is when the acid in the battery crystalized onto the plates inside of the battery. This will prevent the battery from taking a charge and many batteries get thrown out because of this problem. Even new batteries can have this problem from sitting in a shop for too long. See our Battery Desulfators page to prevent this problem with your battery (home, car, truck, all batteries). The point is this, when you connect a battery that is sulfated to a wind turbine, the battery can be charged by a wind turbine because high voltage will pass through the sulfation and force the amperage into the battery. If you have one of our desulfators connected also, you will begin to re-juvinate that battery by knocking the sulfate off, eventully getting almost full life from it. But before you connect the desulfator, you need to let the battery take a charge from the turbine because the desulfators have voltage limits.. If you connect a voltmeter to the battery as it is charging for the first time (old battery mainly) you will notice that the voltage may be higher than normal. This effect is caused by sulfation of course. Over a few minutes you should notice that the battery voltage starts to decline in a constant wind situation, this is because the battery is charging, and a little sulfation is getting knocked off. It will eventually come all the way back to about 12 volts. I have charged a battery that when hooked up read 110 volts going through it. There was hardly any amperage going through. But, not long, 1-2 minutes later the battery voltage started to drop and the amperage began to go through charging the battery eventually reading 12 volts. (Note: Batteries are normally two volts per cell, so if you have 6 fill caps, you have 2v x 6 = 12v battery)

New Battery System

Once you have your Eagle Wind Turbine up and going, you can check the voltage of the wires when they are not connected to your battery and you may find in good wind that it reads say 36 volts. Don't be bothered by this. You will also notice that the turbine is moving fast. It will move faster than normal when disconnected from the battery. As soon as you connect the wires to the battery you will notice even though 36 volts is coming out of the turbine, now that it is hooked up, you voltage reading may now only be 12.5 volts on a 12 volt battery. This is very normal. That is how it works. Thats one reading you may get on a good battery until it gets charged up it will go higher to 14 volts for example or more if you don't put a diversion load conroller on it to prevent the battery from overcharging. Yes, even though the turbine is putting out 36 volts, the battery will only use the amount of voltage or pressure that is necessary to push the amount of amperage coming from the turbine through the battery, but will not drop below 12 volts. Basically, the battery does not need any more voltage to get the amperage through the plates that is coming from the turbine per your meter reading.. A good battery will allow only the voltage necessary to get the amperage through it.

Diversion Load & Conroller

To prevent your battery from being overcharged, you need to put a load controller in the system. A load controller will turn on a switch in which a power consuming product becomes connected to the battery. These load consuming items are: Water Heater Elements, Air Heaters, Resistors. The reason you should not hook up a ceiling fan as a diversion load is because if the fan breaks and you are away on vacation, your batteries will be fried from overcharging. So you must use a reliable device to burn the extra power that is coming from the Eagle Turbine (or any Wind Turbine). Your water heater element or air heater must be sized to burn all the extra power that is being produced by the Turbine. Size it as close to, but not under, the power that is being produced by the turbine. This way also prevents the energy from being waisted that is being produced. See our Diversion Load Page to purchase a water heater element, or air heater. See our Charge Conroller page (Trace C Series Controllers) or Diversion Load Controller Page to purchase the equipment that will switch on the divestion load at the user settable voltage. Connect a water heater up with the Diversion Load element installed and Pre-Heat water going into your existing water heater. (Two water heater system)


If you purchase a tower kit from us it will have 4 guy wires. Where the guy wire is connected to a ground auger, drive a ground rod at each guy wire tie down and connect the cable to the ground rod using a ground wire and clamps. Do this also for the center pole. You will have augers if you do not have a rocky ground. If you have rock you will have to mount the guy wires to anchors in the rock. Check with local electricians for grounding procedures.

Wire Size

Your wire should be designed to give you a 2% or less voltage drop at your average wind speed. You can call to get this information. We will put a table on the web in the future for you to design by. The largest wire that the turbine is designed to be connected to the PMA is a #6. Use welding machine cable because the wire must be very flexible since it will twist inside of the tower. At the base of the tower you can connect a larger wire (solder all connections possible in the wire to reduce voltage drop accross connections). Put all underground wire in waterproof conduit, highly recommened over direct burial wire which canc develop cracks in the plastic an power loss through the gound. Make sure the area where the wire comes out of the conduit is also sealed (with silicone possibly) from humidity or fog building up in the "waterproof" conduit. You can also put a Lightning Arrestor at that connection and one in the disconnect panel.



PMA's <Std. Series>      Super Core PMA's