# Solar Panel Facts

## Introduction

Specifying and designing photo-voltaic solar panel installations will always involve some level of Electrical Engineering. Unfortunately for many people this means exposure to a mind boggling number of terms and expressions some of which are vaguely associated with gladly forgotten physics lessons. Fortunately it’s generally sufficient to know a few basic concepts and terms in order to successfully choose and understand what will work for you.

The key to getting your head around the concepts is to do the same thing that many Electrical Engineers who have studied electromagnetic principles for most of their lives do in one way or another:

- Admit that understanding what electricity and magnetism actually are is rather hard, and maybe impossible.
- Come up with models (in an engineer’s case these models are often mathematical equations) that describe how electricity behaves.
- When needing to understand how electricity works, don’t worry about what electricity is, just use the model.

So in this vein, in the explanations that follow, we’ll use the model that electricity is a fluid, in fact we’ll pretend it’s water. Whilst we all know that electricity isn’t water and that if we cut a live wire we don’t usually get a puddle of electricity on the floor, the concept is still very useful. In fact many of the first mathematicians and engineers to investigate electromagnetic phenomena thought of it in exactly this way, as many of the principles are very similar. For those who find the voyage of electromagnetic discovery interesting please browse the pages we’ve collected here. We’d love to hear from you if you’re an enthusiast and would like to enhance the material we have on the site.

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