Some articles on single:
... A transformer supplying a 3-wire distribution system has a single-phase input (primary) winding ... However, 230/460 V, 3-wire, single-phase systems are used to run farms and small groups of houses when only two of the three-phase high voltage conductors are available ... In Australia and New Zealand, remote loads are connected to the grid using SWER (Single Wire Earth Return) transmission lines (it is cheaper to run one wire than two) ...
Famous quotes containing the words single and/or equivalent:
“Its impossible for someone who is human to have all good things together, just as there is no single country able to provide all good things for itself.”
—Herodotus (c. 484424 B.C.)
“To place oneself in the position of God is painful: being God is equivalent to being tortured. For being God means that one is in harmony with all that is, including the worst. The existence of the worst evils is unimaginable unless God willed them.”
—Georges Bataille (18971962)