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Full Description

This Practice is a guideline for developing Overall Electrical One-Line Diagrams (OEOLDs) by engineers and designers. It covers the generation of new OEOLDs and may not apply to the revision of existing OEOLDs.

The guidelines in this Practice provide a balance between showing all data on OEOLDs and making OEOLDs legible and easy to read. Although this Practice describes major components in the electrical system, specific applications may require additional or alternative components. Determinations concerning fitness for purpose and matters of application of the Practice to a particular project or engineering situation should not be made solely on the information contained in this Practice.