Voltage is often described as the driving force of current. This driving force allows the electricity generated by the power source to be delivered to the electrical appliances and equipment to operate. In China, the voltage for lighting is 220V, and the working voltage of electrical equipment in the factory is usually 380V. Such voltages far exceed the safe voltage that the human body can withstand. Do not touch it directly.
Current often refers to migration from one place to another. The migration of electricity is done by wires or cables. If there is a current of 0.06A passing through the human heart, it is enough to kill people, even though this current is only the current required by the bulb on a Christmas tree. Therefore, you should be very careful when using electricity or close to the power supply.
The safe voltage refers to the voltage that the human body contacts for a long time without risk of electric shock. The safe voltage rating is 42V, 36V, 24V, 12V, 6V. Among them, 42V and 36V can be used in general or relatively dry environments; and below 24V is the voltage used in harsh environments. Such as metal containers, pipes, railway platforms, tunnels, mines, humid environments, etc. (excluding special places such as underwater and medical equipment that may have deep penetration into the human body).
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