Do you think in my situation that my copper water line is bonded properly? The unistrut which carries the copper water line is bolted to the building steel. The building steel is bonded to the egc. Would that be a sufficient bond? In the building I'm working on the plumber has changed over from pvc to copper all over the place. So, I'm just tring to figure out everywhere I need to run a bond wire. {It's a industrial cemical building}