overvoltage

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ABCs of multimeter safety: Multimeter safety and you
Don’t overlook safety—your life may depend on it. Where safety is a concern, choosing a multimeter is like choosing a motorcycle helmet—if you value your head, get a safe helmet. The hazards of motorcycle riding are obvious, but what about multimeters? As long as you choose a multimeter with a high enough voltage rating, aren’t you safe? Voltage is voltage, isn’t it? Not exactly. Engineers who analyze multimeter safety often…