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IAEI Magazine | Author: Bob Herzig
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Bob Herzig

Bob Herzig, P.E., is the principal of Bob Herzig and Associates, Inc., a consulting engineer firm in the Kansas City area that specializes in the electrical systems associated with swimming pools and fountains. His company designs, tests, repairs, and certifies electrical system in all types of aquatics environments. He has a BSEE degree from the University of Missouri at Rolla and an MBA from Rockhurst University. He is a registered professional engineer in seven states and conducts seminars on electrical safety in the aquatics environment. He currently sits on the board of directors for the MO/KS local IAEI Chapter and the Electric League of Missouri and Kansas and has taught power system design classes at the University of Kansas. He can be reached at his office at 816-420-8700 or at


The Danger of Voltage Gradients in the Aquatics Environment

Hidden beneath the glamour and excitement of an aquatics complex is a detailed and essential safety system. This frequently misunderstood network is the swimming pool bonding grid. Article 680 of NEC 2002 covers this system and was revised in this latest edition. Several sections changed paragraph numbers and other information was reformatted to provide clearer interpretation of this section. Section 680.26, Bonding, was formerly 680.22 in NEC 1999. The intent of this section still remains to provide an equipotential plane in the aquatics environment for safety.