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Original General Order 95

 

Section IV

 

Strength Requirements for All Classes of Lines

 

48.4    Conductors, Span Wires, Guys and Messengers

 

Values used for ultimate strengths of wires and cable shall not exceed those given in Appendix B.  The ultimate strengths given in Tables 17 to 24 of Appendix B, except for medium-hard-drawn copper, are based on the minimum ultimate strengths given in the standards specifications of the American Society for Testing Materials.  The ultimate strengths given in Appendix B for medium-hard-drawn copper based on the standard specifications of the ASTM and provide an allowance above the minimum values of one-quarter of the range between minimum and maximum values.  For use of types of wires and cables of other materials not included in Appendix B, values for ultimate strengths similarly derived from specifications are nonexistent, makerís specifications may be used provided that tests have been made which shall justify the makerís rating for ultimate strength.