Meaning: A province in southeastern central China between the Nan Ling mountains and the Chang Jiang; noted for its timber and valuable mineral resources. Classified under: Nouns denoting spatial position. Synonyms: Hunan; Hunan province. Instance hypernyms:
The special-purpose GFCI category is for applications where equipment grounding is provided by the NEC or where the voltage is greater than 150V. Specialty GFCIs trip when the current to ground has a value of 15 to 20 mA.
The threshold of sensation for humans is one milliamp (1mA), while a sustained current of 200mA is fatal-able to stop a typical human heart weighing around 300g. According to Ohm's Law, current passing through a conductor is given by voltage divided by electrical resistance, measured in ohms. The resistance of human skin varies between 1,000 ohms (wet skin) to 100,000 (dry), so the lethal voltages are 200V and 20,000V respectively. A 400g heart (the most a healthy heart can weigh) might take up to 27,000V. At high voltages, extra physics comes into play.