jyohnyb
Member
- Location
- wilmington nc
When does a pool require an equipotential grid? When does it not?
equipotential grid
- Thread starter jyohnyb
- Start date
- Status
jyohnyb
Member
- Location
- wilmington nc
equipotential bond.
equipotential bond.
Yes I know they all need the bonding but there is an alternate method where you can run a number 8 around the pool with no actual grid. When is the grid itself needed?
equipotential bond.
Yes I know they all need the bonding but there is an alternate method where you can run a number 8 around the pool with no actual grid. When is the grid itself needed?
jyohnyb
Member
- Location
- wilmington nc
grid
grid
Isnt there an alternate means that doesnt require a grid but only a number 8 contoured to the pool?
When is the grid itself required?
grid
Isnt there an alternate means that doesnt require a grid but only a number 8 contoured to the pool?
When is the grid itself required?
- Occupation
- Licensed Electrician
Pretty much always if it is an in ground pool.
If the pool is made of concrete you have to bond the rebar. If the rebar is epoxy coated then you have to make your own grid out of #8.
680.26 is the code section.
jyohnyb
Member
- Location
- wilmington nc
grid
grid
Ok so all in ground pools require a 3 ft grid around them?
The code book is not specific about this at all.
grid
Ok so all in ground pools require a 3 ft grid around them?
The code book is not specific about this at all.
I guess eyes of the beholder. 680.26 is in Section II and that section applies to all permanently installed pools and it seems pretty clear the items included in the required equipotential bond includes perimeter surfaces,
- Occupation
- Licensed Electrician
Here's the sections that spell it out.
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
You have to bond the perimeter and any conductive shell (which it clearly states concrete shell is considered conductive).
One of the easiest ways of doing this to concrete is via reinforcing steel. If there is no reinforcing steel or it is coated, then you need alternate methods - that is where the copper conductor grid comes in.
One of the easiest ways of doing this to concrete is via reinforcing steel. If there is no reinforcing steel or it is coated, then you need alternate methods - that is where the copper conductor grid comes in.
david
Senior Member
- Location
- Pennsylvania
Equipotential Bonding.
I think you need to clarify what you mean when you say Equipotential Bonding “Grid”
The pool needs equipotential bonding the perimeter surface needs bonded.
“Vinyl liners and fiberglass composite shells shall be considered to be nonconductive materials.
When a in ground pool has a vinyl liner and the pool structure itself is considered non- conductive the pool structure itself has no requirement to be bonded to the Equipotential bonding system for the pool.
You would commonly see the number 8 AWG. copper around the pool 4’ to 6’ deep place around 20 in from the waters edge to cover the 3 ft area of perimeter surface
but be careful with the Alum. copping the vinyl liner hangs on, it will still need bonded to the Equipotential Bonding
mwm1752
Senior Member
- Location
- Aspen, Colo
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
The older code required a grid but the 2011 clearly allows an alternative method. There are 2 things going on here. You have a perimeter bonding and you can have the pool bonding. Some pools do not need bonding if there are no structural metal parts involved. The perimeter bond is always needed but it can be a #8 buried 4-6 inches below subgrade and follow the contour of the pool 18-24 inches from the inside wall of the pool
david
Senior Member
- Location
- Pennsylvania
brookeblewis
New User
- Location
- Carmel, California, USA
What if the perimeter is a wood deck. Also is the gris necessary if the only electrical source is a 12 Volt light.
- Status