A number 4/0 AWG bare copper ground cable riser connects to the web of a structural steel column via an exothermic weld located two feet above the finished floor. The cable extends downward through the floor level to tie into the building ground grid.
#4/0 AWG BARE COPPER GROUND CABLE RISER TO BUILDING GROUND GRID EXOTHERMIC WELD FINISHED FLOOR WEB OF STEEL COLUMN 2'-0"
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