Sets 3-4

These sets are for concrete/masonry or wood frame structures where all of part of the building exceeds 75'above grade. The selection of a specification is based of material type required. The choices are the same as those above for Sets 1 and 2.
 
I. Frame Type II. Bldg. Height III. Material Req'd IV. Use Spec Set
Non-conductive Above Copper Only Use Set 3
Non-conductive Above Aluminum on Roof w/Copper Ground Use Set 4
Sets 5-8

These four sets pertain to continuous steel frame buildings. The basis for choice of specification on these type of buildings are material, either copper or aluminum, and building height. Sets 5 to 7 are for all copper systems, and Sets 6 to 8 call for aluminum to be used in the roof system with a copper ground system. The choice again depends on material preference and structural considerations.
 
I. Frame Type II. Bldg. Height III. Material Req'd IV. Use Spec Set
Conductive Below Copper Only Use Set 5
Conductive Below Aluminum on Roof w/copper Ground Use Set 6
Conductive Above Copper Only Use Set 7
Conductive Above Aluminum on Roof w/ Copper Ground Use Set 8