DOE-HDBK-1016/1-93ELECTRICAL DIAGRAMS AND SCHEMATICSElectrical Diagrams and SchematicsWhen fuses, breakers, or switches are used in three-phase systems, the three-phase symbolcombines the single-phase symbol in triplicate as shown in Figure 6. Also shown is the symbolfor a removable breaker, which is a standard breaker symbol placed between a set of chevrons.The chevrons represent the point at which the breaker disconnects from the circuit whenremoved.Figure 6 Three-phase and Removable Breaker SymbolsRelays,Contacts,Connectors,Lines,Resistors,andMiscellaneousElectricalComponentsFigure 7 shows the common symbols for relays, contacts, connectors, lines, resistors, and othermiscellaneous electrical components.PR-03Rev. 0Page 6
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