IEEE 635-1989 pdf free.IEEE Guide for Selection and Design of Aluminum Sheaths for Power Cables. 1.1 Purpose The purpose of this guide is as follows 1)Outline requirements and establish design guidelines for the selection of aluminum sheaths for extra-high,high-, medium-, and low-voltage cables. 2) Establish basic installation parameters for aluminum-sheathed cables 3)Provide references to industry standards and codes incorporating design...