Manhole Arc Flash

An electrical fault in underground cables caused an arc flash and serious injury to a construction worker who later sued the cable company alleging the cable was defective.

For the defense, Drake Exhibits recreated the site with an innovative scale model comprised of a progressive series of cross-sections modeling the two manholes, connecting duct, surrounding strata, transformer location and substation floor.

Drake also produced a life-sized cross-section of the duct illustrating its cables, protective sheathing and conduit. Both models were used to demonstrate that improper construction practices rather than product defects caused the accident.

for Edwards Wildman
Providence, Rhode Island

scale model trial exhibit

scale model trial exhibitDetail of manhole in cross section showing cable arrangement

scale model trial exhibitFull scale model of cable duct at manhole end

scale model trial exhibits