1 : Surface area is a country's total area, including areas under inland bodies of water and some coastal waterways. 2  Irrigated land: The number of square kilometers of land area that is artificially supplied with water. 3  Population density: People per square kilometre, in 1999. 4  At this time the world average was 14.42.
A ground fault is an inadvertent contact between an energized conductor and ground or equipment frame. The return path of the fault current is through the grounding system and any personnel or equipment that becomes part of that system.
A ground fault circuit interrupter is an electrical device installed to protect against severe electric shocks. GFCIâs could also reduce electrocutions and minimize electrical burns and shock injuries. A GFCI, not to be confused with an AFCI, integrates a ground fault protection in receptacles where electrical equipment is near water or might be in contact with water. Ground fault circuit interrupter also detects ground faults and interrupts the flow of electric current.