A number of swimming pool builders in New Jersey are struggling with the grid requirement needed 3 feet beyond pool wall. On concrete pools one can extend the rebar out 3 ft before deck is installed. On inground vinyl liner pools, pavers are often used and it is cost prohibitive to add rebar for the 3 ft surface around pool or NEC gives the other option of #8AWG. That even is more expensive. The normal welded steel wire, that is often used in decks for vinyl liner pools is not specifically listed a meeting the grid requirement. Has anybody else been struggling with the grid material for vinyl or fiberglass swimming pool?
Equipotential Bonding Grid
- Thread starter Pitrak
- Start date
- Status
- Location
- Logan, Utah
- Location
- New Jersey
- Occupation
- Journeyman Electrician
As far as I know NJ does not require the equipotential bonding grid.
rcarroll
Senior Member
- Location
- Fort Collins, Colorado
Pitrak, read the TIA that Raider1 sent you to. Then ask the AHJ if the wire mesh you are asking about is a "structural reinforcing steel" the code refers to. Or, is the standard rebar & #8 cu the only grid materials?
- Location
- New Jersey
- Occupation
- Journeyman Electrician
If you must install one you can use a product like this:
rcarroll
Senior Member
- Location
- Fort Collins, Colorado
What exactly is that, infinity? My eyes are playing with me & I can't see the photo very well. Thanks, Ron
- Location
- Massachusetts
That is copper mat made expressly for the purpose of creating a grounding grid under pavers and the like.
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rcarroll
Senior Member
- Location
- Fort Collins, Colorado
Thanks iwire. Now let me ask, is wire mesh suitable for an equipotential bonding grid?
- Location
- Massachusetts
rcarroll said:
The copper 8 AWG grid in the picture is.
Not steel reinforcing mesh.
equipotential bonding grid
equipotential bonding grid
Thank you for your replies, especially the picture. Yes the state is mandating only structural steel like that used in concrete pools. We know that other areas of the country have specifically stated that 6x6x10x10 WWM is acceptable aas long as it it tied to the pool bond. I'm researching more on the WWM and its suitability for the grid. Please respond with any ideas or comments
equipotential bonding grid
Thank you for your replies, especially the picture. Yes the state is mandating only structural steel like that used in concrete pools. We know that other areas of the country have specifically stated that 6x6x10x10 WWM is acceptable aas long as it it tied to the pool bond. I'm researching more on the WWM and its suitability for the grid. Please respond with any ideas or comments
rcarroll
Senior Member
- Location
- Fort Collins, Colorado
Copper with gold pricing
Galvanized hotdip WWM won't be as costly as copper, and it will perform in direct burial conditions just as well as tinned ground electrodes. Avoid using thin Electroplated galvy mesh that is suseceptable to plating degradation and rusting. Bond connections between copper and galvy using direct burial compression connectors is as compatible in most soil conditions and concrete coverage. There may be something better out there in lieu of copper or it's cousin gold for a lesser price but galvy is the only economical answer I know of at this time. Check out a wire mesh manufacturer such as Screen Technology Group at http://www.wovenwire.com that has all sorts of metal comparison charts and data on metal physical properties. They may be able to point you to a good souce. rbj, Seattle
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