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Includes:
a. Electrical Contact Accident Site Surveys and Analysis
b. Vertical Clearance Measurement and Calculation Sheets
c. Horizontal Clearance Measurement and Calculation Sheets
Accidents involving inadvertent contact of energized electrical utility facilities usually involve (a) measuring and recording the position of the utility facilities relative to nearby surfaces, (b) determining the vertical, horizontal and diagonal clearances from the utility facilities to the ground or nearby installations, and (c) comparing these clearances to applicable requirements in the National Electrical Safety Code (NESC) or other standards or industry practices. Utility accident investigation also involves measuring the distances from conductors or other utility facilities to the location of the person(s) contacting the line, contact marks on adjacent installations, etc. Success at these endeavors requires careful and thoughtful measurements and calculations, as well as careful study of applicable standards.
The 16-page Electrical Contact Accident Site Surveys and Analysis paper discusses what information to record, how to take the information, and how to use the data in clearance calculations, including an example of a wind displacement calculation.
You receive 3 PDF's.
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