If you are interested in expanding solar power on your RV, there are a few things to keep in mind when it comes to adding panels.

The number of extra panels you should add will depend upon a variety of factors. Start by keeping track of the average amps used on a daily basis while staying in the motorhome. Solar panels are rated in watts and calculated to produce, in optimum conditions, a specific number of amps. Knowing how much electrical power you use on average over a 24-hour period will help determine the size and type solar panels that can best suit your individual RV electrical needs.

Take a close look at the available space on the motorhome roof. Use a tape measure and calculate that square footage before purchasing additional panels. If you are having the panels installed by a technician, physically show that person where you wish to have the panels positioned in order to avoid confusion that could ultimately interfere with plans you may have for other after-market components.

Avoid wasting time and money on inferior products. Quality solar panels are generally required to pass the following field tests: Thermal Cycling, Thermal Shock, Thermal/Freezing, High Humidity Cycling, Electrical Isolation, Hail Impact, Mechanical and Field Exposure. In addition, make sure that any panel you purchase is backed by a sound warranty.

Solar panel systems include a controller designed to work as a heat buffer that will prevent the panels from overcharging the batteries. Usually located at the battery compartment, or inside the motor home, you will need to insure that the controller is capable of absorbing the increased charge of extra panels. When mounting the new solar panel it is important to use the correct gauge wire size from the panel to the controller and then to the batteries.

Standard mounts are designed to hold the panel flat against the roof. Tilt mounts are available so the RV operator can maneuver a panel to increase exposure to the sun during winter months or in places where sun exposure is limited. Use aluminum panel mounts that are guaranteed not to rust.

Batteries are used to store the solar energy collected by the panels. If you are adding panels to increase available power supply, consider enlarging the battery bank to store that additional power. Once the additional solar power is up and running, levels in liquid lead acid batteries will require more frequent monitoring to keep the plates covered with water.

Once you've gone jumped through all the hoops of adding solar panels to the RV, glean the electrical benefit by keeping the panels clean and positioned to capture maximum sun exposure.