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Wireless solar electric power systems are now in use around the world, servicing many different remote electrical needs. Thousands of residences - from full-time off-grid homes and vacation cabins to remote villages - are powered by a solar system. This publication is used in conjunction with our “Solar Electric Products Catalog” to provide you with all the information you need to make an informed decision. If you intend to purchase a solar electric system, this guide will provide you with the information to ask the right questions and understand the operation of your proposed system. Included are worksheets so that you can calculate the size of your own system. How do Photovoltaics work? We can easily explain how the Photovoltaic effect produces a flow of electrons. In short, electrons are excited by particles of light and find the attached electrical circuit the easiest path to travel from one side of the cell to the other. Powering Your Heating Loads Photovoltaic systems and the power they produce are best suited and most economical for operating motors, pumps, electronic equipment, lighting and the like. PV’s are not recommended to run your heating loads. The Whole Home Approach When considering energy efficiency it is important to consider the home as a system. Most loads are related to each other. For example: a well insulated house requires not only less heating and cooling but also less energy to distribute and circulate this conditioned air. Electricity for Beginners Electricity can be thought of as a flow of electrons through a conductor, generally wire. This flow is often compared to the flow of water through a pipe. In this analogy, if you wish to have increased flow through the pipeline, you will need either a bigger pipe or you will have to push the water (or electricity) through at a more rapid rate. Calculating Power Consumption After determining the amount of solar radiation available, we must next determine the size of the load that we are supplying with power. Charge Controllers/Regulators. How Controllers Work and Available Options. Inverter Component Checklist.
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