Here is a copy of the BOAF Informal Interpretation released yesterday on the subject of Section 680.26(C) of the 2005 NEC. I’ve also provided a link to download it directly: http://www.boaf.net/pdf/I-List/4856.pdf
Date: Thu Jan 4 2007
Report #: 4856
Section: 680.26(C) (2005 NEC)
Is it the intent of 680.26(C) to require either steel reinforcing rods (rebar) or #8 bare, solid copper
conductors installed as specified in the code to form the equipotential common bonding grid required for
paved walking surfaces within within three feet of the inside walls of a swimming pool, or is it acceptable
to utilize 6X6 W4 wire welded mesh commonly used for slab reinforcement tied to the reinforcing steel
of the pool shell with wire ties?
The recent adoption of the 2005 NEC has generated a lot of discussion whether this is an acceptable
method based on the wording referenced in the code. 6X6X10WWF (Welded Wire Fabric (Mesh)) is
acceptable when properly installed on chairs and each section is clamped with appropriate listed devices
and/or #8 solid copper jumpers. This product is specifically referenced in Article 547 for agricultural
buildings and has been used for many years. While the mesh may not be installed directly in earth contact
or without the proper cover, it is considered to be an acceptable method of meeting the equipotential
bonding grid requirement when properly installed.
Editors Note: Much discussion regarding this requirement has occurred and possible changes to this
section for clarification and/or specifying the requirements are being proposed for the 2008 NEC.
Outcomes from the review of those proposals need to be monitored for possible future changes to this
The Building Officials Association of Florida, in cooperation with the Florida Building Commission, the Florida
Department of Community Affairs, ICC, and industry and professional experts offer this interpretation of the Florida
Building Code in the interest of consistency in their application statewide. This interpretation is informal, non−binding and
subject to acceptance and approval by the local building official.