Two- and three-wire distribution systems, either direct current or single-phase alternating current, are widely used for lighting installations. e. ... From the double arrowhead, these wires are run to the circuit breaker panel without additional connections. b. ... A list of drawing notes is ordinarily provided on a schematic wiring diagram to specify special wiring requirements and indicate building conditionsanbsp;...
|Author||:||United States. Dept. of the Army|