On the bottom right commentary on page 1044 of the 2008 nec handbook it states that the perimeter bonding grid can be comprised of welded wire mesh.If someone had a vynyl in ground pool with a concrete bullnose instead of metalic coping , could the welded wire mesh in the sidewalks extending around the perimeter of the pool be used as the equipotential bonding grid for all equipment required to be bonded,or would we have to run a #8 around the pool and bond everything to that?Please keep in mind that I'm not asking what would be better,but would the mesh be acceptable as the equipotential bonding grid.I think it would be,but a very smart pal of mine says it can't.Thanks.PS; there are no other means available to bond to.
equipotential bonding grid
- Thread starter tommyrice
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- Chapel Hill, NC
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- Retired Electrical Contractor
This is a tricky question because if the mesh were not there you would need a #8 copper conductor yet 680.26(B)(2)(a) says you can based on 680.26(B)(1)(a). Then 680.16(B)(1)(a) directs us to 680.26(B)(1)(b). This section requires a grid of #8 copper. Most wire mesh material is not equivalent to #8 copper so it does not seem adequate yet it does appear to be allowed.
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