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Saturday, November 21, 2009

Amp Eaters

Vehicle electrical loads are like vehicle weights. Some departments keep adding individual components one after another and are surprised when the resulting total is so high. Some departments don’t even consider electrical loads and end up having problems. To avoid overloading the alternator and batteries, departments need to understand that some electrical devices draw a lot more current than others. This is especially important for devices that are normally operated when the vehicle is stationary and the engine is at idle. If the total electrical load exceeds the alternator output, the electrical load manager may have to turn ...

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