Since most inverters have receptacles the easiest way to do this is to disconnect the light fixture from the electric panel run a length of 12 or 14 gauge outdoor cable from the light to the inverter connect one end to the light install a plug on the on the.
How to connect solar panels to electic fans.
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.
The batteries are charged by the small solar panel and you step up from the battery voltage to 12 v.
You will also need a permit and the electric company to inspect the work.
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.
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.
I was going to avoid the use of batteries if possible.
A fan having 12vdc and 25 watt need a panel of 12vdc and 30watt.
Connect the ac generator to the power inverter to provide additional electricity in case you run out of solar energy or battery power.
A solar panel consists of solar cells which convert light energy from the sun into electric energy.
Solar energy is unpredictable and you might run out of the stored solar energy if there are several weeks of cloudy days.
The harbor freight solar panel kit is 12v 45 watts and 3 amps.
The electric energy produced is usually direct current dc.
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.
It would be good to put a dc controller in between panel and dc fan.
Knowing the specs of both the panels and the fans would be helpful.
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.
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.
In order to run a solar fan directly from solar panel without battery you need to select whole system carefully.
This can be an overwhelming endeavor and it may be best to get the help of a certified electrician.
The direct load can be directly powered up through solar power and a charge controller during the sunshine day time and during the shading night the dc load can be powered up using the battery.
The fan is a rule 240 bilge blower which is 12v and draws max of 4 3 amps.
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.
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.
The following article will show you how to connect the solar panels to the home s existing electrical supply.
