How well do you know the Code? Think you can spot violations the original installer either ignored or couldn't identify? Here's your chance to moonlight as an electrical inspector and second-guess someone else's work from the safety of your living room or office. Joe Tedesco, who has a knack for finding shoddy electrical work, did the dirty work and found this mess. Now it's your turn to identify the violation.
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A grounding or bonding conductor shall be connected to a grounding electrode by exothermic welding, listed lugs, listed pressure connectors, listed clamps, or other listed means (250.70). In this case, a metal water pipe is serving as the grounding electrode. Although the ground clamp shown in this photo is listed for this purpose, the termination of the conductor under the clamp is not permitted as shown.