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What is dangerous limit of voltage for 50Hz AC current for adult?
Wiki User
∙ 12y ago
The danger level is dependent on the individual, and the individuals environment. You need to understand the danger of electricity is due to the fact that our bodies operate on electrical impulses. When electrical impulses are induced into your body by forces outside your body that override your brain's signals, bad things begin to happen. The number 1 factor that determines what force (ie voltage) is necessary to "inject" electricity into your body is the resistance of your epidermis. This resistance is impacted by dryness, fat content, stress levels, the presents of salts and other minerals, and a host of other things.
Current flowing through your body in excess of ~20mA at 50Hz can be dangerous. Your body's resistance is likely to be somewhere between 1000 and 500000 ohms. Using ohm's law, as little as 20 volts could, under the right conditions, be dangerous. That is why you should always treat electricity with respect - Don't turn on/off lights with soaking wet hands; don't use electronics plugged into a wall socket in a bathtub, turn off the circuit breaker if you are doing any home wiring that impacts that circuit, etc.
By "Dangerous", I'm referring to the let go current levels. These are the current levels where you no longer have control of whatever part of your body has completed the circuit. At these levels, the signals from your brain are too small relative to the outside influence to tell your muscles to do anything. That's why it's called the let go threshold - you can't let go anymore! As little as 50 volts can cause ventricular fibrillation/death in a matter of minutes.
Wiki User
∙ 12y ago
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