How To Connect Solar Panels To Electic Fans

The harbor freight solar panel kit is 12v 45 watts and 3 amps.

How to connect solar panels to electic fans.

How to power fan directly from solar panel. This can be an overwhelming endeavor and it may be best to get the help of a certified electrician. The batteries are charged by the small solar panel and you step up from the battery voltage to 12 v. Knowing the specs of both the panels and the fans would be helpful.

So why do you take apart the solar lawn light. The following article will show you how to connect the solar panels to the home s existing electrical supply. You will also need a permit and the electric company to inspect the work. The output voltage varies depending on the size of the solar panel its wattage rating and of cause the amount of sunlight available on a certain day.

The rule of thumb when connecting solar panels directly to a battery is never connect more than c 10 watts where c is the capacity of your battery. A fan having 12vdc and 25 watt need a panel of 12vdc and 30watt. For example a 110ah battery should never be connected to a panel more than 11w without a solar controller and if you are using a solar controller you do not need a blocking diode. It would be good to put a dc controller in between panel and dc fan.

In order to run a solar fan directly from solar panel without battery you need to select whole system carefully. As far as i can tell you re running the 12 v fan from the two rechargeable batteries which have a combined voltage of 2 4 v in series or 1 2 v in parallel. A complete note on solar panel installation with calculation examples the dc load light fan etc is directly connected to the charge controller and can be fed up by two power sources. Solar energy is unpredictable and you might run out of the stored solar energy if there are several weeks of cloudy days.

The little 12v computer type muffin fans would need to be tested as some models do not like to start from a slow voltage rise others have a little timer circuit that repeats the start cycle and that style will start. When these components are placed and connected you have power and all that s left to do is to connect the light to the inverter. A solar panel consists of solar cells which convert light energy from the sun into electric energy. I was going to avoid the use of batteries if possible.

The electric energy produced is usually direct current dc. I want to use a harbor freight or similar solar panel to power a fan that will move air from a solar heat collector to my house. A backup source is essential for meeting power needs. The fan is a rule 240 bilge blower which is 12v and draws max of 4 3 amps.