As I read 680, it is my understanding that we need a to bond to the rebar at only (4) locations, and add a conductor 24" in from the exterior perimeter of the pad, no matter the size of the splash pad. (Drive a ground rod and connect it to the rebar at each of these locations. Question is why would the number of connections increase based on the size of the splash pad?)
Splash pad bonding
- Thread starter JoeBags
- Start date
ggunn
PE (Electrical), NABCEP certified
- Location
- Austin, TX, USA
- Occupation
- Consulting Electrical Engineer - Photovoltaic Systems
Maybe it's because the resistance of the water increases with distance from a connection?
Elect117
Senior Member
- Location
- California
- Occupation
- Engineer E.E. P.E.
Is the splash pad connected to a pool?
No ground rods are required for bonding. I don’t think you’ll find the words “ground rod” anywhere in article 680.26.
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
Because it's about equi-potential bonding, not earthing.
Then what are you bonding to?
Elect117
Senior Member
- Location
- California
- Occupation
- Engineer E.E. P.E.
Think of it like this, if you were standing on a sky scraper and jumped up and down, no issue. If you were to walk to the edge and jump down, then you will fall all those stories down and splat.
The idea is similar. You are trying to keep all of the voltage at the same potential to avoid a gradient or a change in potential between where they are in the water and where they step out to the "dry" part. So you extend it so that there is no change between being wet in the water and where they get out. You extend and bond metal parts to create this zone.
The idea is similar. You are trying to keep all of the voltage at the same potential to avoid a gradient or a change in potential between where they are in the water and where they step out to the "dry" part. So you extend it so that there is no change between being wet in the water and where they get out. You extend and bond metal parts to create this zone.
Mystic Pools
Senior Member
- Location
- Park Ridge, NJ
- Occupation
- Swimming Pool Contractor
I would treat this like any inground concrete pool.
Locate 4 points and attach tails, run the perimeter bond and attach to the 4 points. Run a separate dedicated bond wire back to the equipment.
No ground rods.
680.26(B)(2)(b) requires unpaved portions must have perimeter bond 18"-24" from inside edge of pool wall
680.26(B)(2) requires perimeter bonding must extend a minimum of 3' from inside of pool wall. Is this for paved areas that have structural steel?
I'm looking at 2017 and 2023 NEC from Mike Holt's illustrated guide.
The splash pads are generally pitched to the center to retain the water and allow for the circulating pumps to draw the water. The structure will extend beyond the play area and will have structural steel.
Only thing I can think of that may be questionable is the water location on a splash pad may not come close to the actual perimeter of the structure. So how does it how it relates to the required location of the perimeter bond? I guess this would hold true also for a beach entry swimming pool?
I would assume 680.26(B)(2) works for this??
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Locate 4 points and attach tails, run the perimeter bond and attach to the 4 points. Run a separate dedicated bond wire back to the equipment.
No ground rods.
680.26(B)(2)(b) requires unpaved portions must have perimeter bond 18"-24" from inside edge of pool wall
680.26(B)(2) requires perimeter bonding must extend a minimum of 3' from inside of pool wall. Is this for paved areas that have structural steel?
I'm looking at 2017 and 2023 NEC from Mike Holt's illustrated guide.
The splash pads are generally pitched to the center to retain the water and allow for the circulating pumps to draw the water. The structure will extend beyond the play area and will have structural steel.
Only thing I can think of that may be questionable is the water location on a splash pad may not come close to the actual perimeter of the structure. So how does it how it relates to the required location of the perimeter bond? I guess this would hold true also for a beach entry swimming pool?
I would assume 680.26(B)(2) works for this??
.
Greentagger
Senior Member
- Location
- Texas
- Occupation
- Master Electrician, Electrical Inspector
Well actually……………Electrode is mentioned in 680.26(B). But this tells us it is not required to be.