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Interesting series of articles explaining RV electrical systems and how to safely deal with them. The latest article - the third in the series - explains the electrical outlets you would find on a campground pedestal. It covers how to meter it safely, what to look for in the voltage measurements, and what to avoid. The illustrations are very clear and helpful to understand basic electrical theory, and how it applies to your RV.
The second in the series explains volt meters and how they are used to measure the outlets inside your RV. The first article in the series explains voltage, and gives good safety tips to keep from getting zapped.
See the entire series of articles at the No Shock Zone...