Correction:

The Forensic Casebook article, “The Case of the Conduit That Wasn't Continuous,” (September 2005) incorrectly stated that conduit is not permitted to be used as an equipment-grounding conductor. The NEC does allow continuous electrical metallic tubing (EMT) to serve as an equipment-grounding conductor. In addition, the so-called “screw in hook” is actually an approved conduit drive strap, which you initially drive in place with a hammer. EC&M regrets the error.