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Original Version
Rule 42

42 Grades of Construction
For all classes of lines, the relative order of grades is A,B, C and F, grade A being the highest. Supply and communication lines, where not involved in crossings, conflicts or on poles jointly used, shall be constructed and maintained so as to conform with grades of construction not less than as follows:
Class E supply Grade B
Class H supply Grade B
Class L supply Grade C
Class C communication Grade F
Supply and communication lines, where involved in crossings, conflictsor on poles jointly used, shall be constructed and maintained so as to conform with grades of construction not less than as specified in Table 3.

Strikeout and Underline Version
Rule 42

42 Grades of Construction
For all classes of lines, the relative order of grades is A, B, C and FC, grade A being the highest. Supply and communication lines, where not involved in crossings, conflicts or on poles jointly used, shall be constructed and maintained so as to conform with grades of construction not less than as follows:
Class E supply circuit Grade B
Class H supply circuit Grade B
Class L supply circuit Grade C
Class C communication circuit Grade FC
Supply and communication lines, where involved in crossings, conflictsor on poles jointly used, shall be constructed and maintained so as to conform with grades of construction not less than as specified in Table 3.

Final Version
Rule 42

42 Grades of Construction
For all classes of lines, the relative order of grades is A, B, and C, grade A being the highest. Supply and communication lines, where not involved in crossings, conflicts or on poles jointly used, shall be constructed and maintained so as to conform with grades of construction not less than as follows:
Class E supply circuit Grade B
Class H supply circuit Grade B
Class L supply circuit Grade C
Class C communication circuit Grade C
Supply and communication lines, where involved in crossings, conflictsor on poles jointly used, shall be constructed and maintained so as to conform with grades of construction not less than as specified in Table 3.