Page 281 - Electrical Safety of Low Voltage Systems
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earthing conductors, 196–197, 197t
equipotential bonding conductors, 194f, 194t
usage of, 195–196
functions of, 182–183, 183f, 183t
main earthing terminal, 196–197, 197t
PEN conductors and, 197–198, 197f, 198f
Earth-free local equipotential bonding, 22–23, 23f
Earth impedance, 209
Earth resistance
ground electrodes and, 45–46
ground resistance, 47, 48f, 49f
hemispherical electrodes, 46, 46f
hemispherical shells, 46, 47f
measurement for, 226–228, 227f, 228f
Earthing conductors, 196–197, 197t, 244
ECP. See Exposed-conducive-part
Einstein, Albert, 29
EKGs. See Electrocardiograms
Electrical currents
frequency effect, 76, 76f
physiological responses to
body mass, 81, 81f
let-go, 77
