Lightning Protection System DWG provides a practical AutoCAD reference for detailing air terminals, down conductors, grounding connections, test boxes, and related protection components. actiVsense, BLITZDUCTOR, Blitzfibel, BLITZPLANER, CUI, DEHN, DEHN logo, DEHNARRESTER, DEHNbloc, DEHNbridge, DEHNfix, DEHNgrip, DEHNguard, DEHNport, DEHNQUICK, DEHNrapid, DEHN schützt., DEHNshield, DEHNsnap, DEHNventil, HVI, LifeCheck, Red/Line, “. mit Sicherheit DEHN“ and the colour trade mark. OBO Bettermann is one of the world's most experi-enced manufacturers of lightning and surge protection systems. For almost 100 years, OBO has been devel-oping and producing standard-compliant lightning pro-tection components. Among other things, standardized requirements for line lengths, effective protection areas and fuse. According to the National Severe Storm Laboratory, there are approximately 6 million strikes per year across the country. We know from the numerous methods used to monitor strikes that the number of strikes seen in the U. The details below show typical mounting applications on various roofs, fastener placement on various roofs and miscellaneous bonding and conductor splicers.