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Thread: Does your pool need to be bonded to add a SWG?

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    Does your pool need to be bonded to add a SWG?

    Hello,
    I can't be sure my pool was bonded when built. I assume I would see a copper wire somewhere near the equipment.

    My question is, does your pool have to be bonded to install a SWG? The pool store guy said it did so my equipment and pannels don't rust. Equipment maybe but my pannel walls? They don't even get touched by the water do they?

    Any insight would be helpful?
    Thanks
    16x32 inground vinyl 8' deep end
    1hp Northstar Pump, 20" Sand Filter
    6ft Double Lounge, 2 Aqua Lamps w/remote
    216sqft Sungrabber Panels (9- 2'x12') a little undersized

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    Re: Does your pool need to be bonded to add a SWG?

    There is a bonding lug on most all pool pumps. A large, bare copper wire should be attached to it and travel underground to the pool ladders, rails, decking, etc. (where you likely would not be able to see it). If you don't have that large copper wire attached to your pump, I doubt your pool is bonded.
    Dave S.
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    Mod Squad Bama Rambler's Avatar
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    Re: Does your pool need to be bonded to add a SWG?

    In all actuality any metal near or in your pool should be bonded, SWG or not! Electrical bonding is for personal protection and should be done on all pools. If it were me I'd have it checked for bonding whether I were adding an SWG or not.

    At some point everything around the pool touches water. Think about it this way, you have a plastic bowl (pool) full of water and it has an electrical wire in it (short at the pump, etc.) and you're standing in or near the water. Now everything's ok until you either are in the water and touch something outside or you're outside and touch the water. Then you get shocked. If it were properly bonded, you'd trip the breaker before anyone got hurt.

    Sorry to be so long winded about this but I think it's important for people to understand that it's more important to personal safety than just keeping your metals from corroding.
    Dave J. TFP Moderator
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    Re: Does your pool need to be bonded to add a SWG?

    Safety issues are much more important than the rather small corrosion risk. Any permanently installed pool should be bonded, with or without a SWG. The only SWG I know of designed to work without bonding is the Intex unit. They get around the safety issues by requiring that the unit only be running when no one is in the pool.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: Does your pool need to be bonded to add a SWG?

    Bonded? Do you mean grounded?
    20' x 40' IG with vinyl liner volume approx. 35,000 gal.1.5 H.P. main pump, Polaris 280 cleaner W/ 3/4 H.P. booster pump
    Hayward sand filter, 3.14 sq ft, 62 gpm. Stenner 45 MPH10 chlorine feed pump. 1 micron final filter bags (home made and very effective)

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    JasonLion's Avatar
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    Re: Does your pool need to be bonded to add a SWG?

    Bonding and grounding are superficially similar but serve completely different functions. Bonding means connecting all of the metal/conductive parts of the swimming pool together so that there can never be a voltage difference between any two parts. While it is fairly common for the bonding system to be grounded, this is incidental and not required for bonding to serve it's purpose.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: Does your pool need to be bonded to add a SWG?

    Thanks, I didn't know about bonding. In fact that's the first time I've heard the term used, but I see the difference between grounding and bonding.
    20' x 40' IG with vinyl liner volume approx. 35,000 gal.1.5 H.P. main pump, Polaris 280 cleaner W/ 3/4 H.P. booster pump
    Hayward sand filter, 3.14 sq ft, 62 gpm. Stenner 45 MPH10 chlorine feed pump. 1 micron final filter bags (home made and very effective)

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    Re: Does your pool need to be bonded to add a SWG?

    I didn't know about bonding till after the build. I don't remember seeing any #8 wire around the pool or equipment however I wasn't looking for it either. I had an electrician hook up my pool shed and equipment and he never mentioned anything about bonding. If it was bonded would I see a wire somewhere near the equipment?

    Is it possible to bond an existing pool without digging all the way around it, and exsposing the frame, ladder ect? We didn't need any inspections during the build, just a permit before to build.

    Thanks for the information.
    16x32 inground vinyl 8' deep end
    1hp Northstar Pump, 20" Sand Filter
    6ft Double Lounge, 2 Aqua Lamps w/remote
    216sqft Sungrabber Panels (9- 2'x12') a little undersized

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    Re: Does your pool need to be bonded to add a SWG?

    haybird is in Canada, and the rules are different there. In Canada, grounding of the bond wire is required.

    I don't believe it is necessary, but obviously there are some who do or it wouldn't be code there.
    The sides of the argument basically boil down to "Grounded is safer against a lightning strike while swimmers are in the pool" and "Not grounded is safer in the event of the earth being energized by a power line in the area of the pool, so get the heck out of the pool if there are storms nearby."

    Normally the only place you'd see a bond wire on a completed pool is at the pump where the wire connects to the pump's bonding lug, or where that same wire connects to the grounding electrode on a Canadian install.

    I don't know of any easy way to bond an existing pool with a concrete deck.
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    Re: Does your pool need to be bonded to add a SWG?

    Does anyone know when inground pools were required to be bonded in the US?
    approximately 14,000 gallon polygonal pool. Pentair SWCG, Pentair VS, Pentair cartridge filter, Fafco Solar Panels, and a Pentair Legend pool sweep.

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    Mod Squad Bama Rambler's Avatar
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    Re: Does your pool need to be bonded to add a SWG?

    Atricle 680 (Swimming Pools) was added to NFPA 70 (NEC) in 1962.

    680-8 dealt with grounding and bonding.
    It was renumbered in 1975 to 680-22 and renamed Bonding.
    In 2002 it was renumbered again to 680-26.
    In 2005 it was renamed again to Equipotential Bonding and major changes made to the body.

    Looking at all that, I'd have to say about 1963. Realizing that not all governing bodies adopted the NEC it was probably later than that for a lot of places.
    Dave J. TFP Moderator
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    Re: Does your pool need to be bonded to add a SWG?

    Quote Originally Posted by shay1208
    Does anyone know when inground pools were required to be bonded in the US?
    That's hard to say. NEC isn't the law unless it is adopted by local ordinance, so different versions apply in different areas of the country. The 1962 NEC first added swimming pool requirements, and it required all metal parts to be grounded and connected together. In 1975, the concept of bonding without grounding was introduced. In 1984, a clarification was added to indicate that a ground was not supposed to be part of the bonding system.

    The wiring should be there on any pool built after a version of the NEC for 1962 or later was adopted locally. It's termination may be slightly different.

    ETA: Dangit Bama! All that typing and you finished before me. At least we said basically the same thing.
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    Re: Does your pool need to be bonded to add a SWG?

    Thanks Bama Rambler and JohnT. We are about to make make an offer on a house that has a pool built in '82. I was wondering if it was bonded.
    approximately 14,000 gallon polygonal pool. Pentair SWCG, Pentair VS, Pentair cartridge filter, Fafco Solar Panels, and a Pentair Legend pool sweep.

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    Re: Does your pool need to be bonded to add a SWG?

    Does the bonding wire need to run in a loop? I added a SWG and wanted to just run a bonding wire to the existing bonding loop which is AGP-->heater-->pump.

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    Mod Squad Bama Rambler's Avatar
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    Re: Does your pool need to be bonded to add a SWG?

    No, it doesn't need to be a loop. everything just needs to be tied together. However there are specific connectors made for splicing bonding grids. I'd recommend you using one of them to tie the new #8 wire to the existing one.
    Dave J. TFP Moderator
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    Re: Does your pool need to be bonded to add a SWG?

    Quote Originally Posted by Bama Rambler
    No, it doesn't need to be a loop. everything just needs to be tied together. However there are specific connectors made for splicing bonding grids. I'd recommend you using one of them to tie the new #8 wire to the existing one.

    Does Home Depot commonly sell these things?

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    Mod Squad Bama Rambler's Avatar
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    Re: Does your pool need to be bonded to add a SWG?

    Yeah, they sell them. Look at the split bolt connectors. The solid copper ones should be listed for bonding and grounding.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    Re: Does your pool need to be bonded to add a SWG?

    Well I have been thinking of trying a SWG myself. I know my pump and heater are grounded to a long rod under ground but I know my pool is not bonded. Its an AB pool and really the only metal is the walls themselves. What would I need to do if anything to make the switch over to SWG as far as bonding?
    24' AGP Sentinelle 54" , 1hp 2 speed power-flo matrix, New 250K to replace the 150k BTU heater, pool roover Jr. Aqua Trol SWG, Large deck, taylor k-2006, Majestic Stairs with colored LED, COLD BEER

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    JasonLion's Avatar
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    Re: Does your pool need to be bonded to add a SWG?

    There are two classes of above ground pools. If the pool is put up and taken down seasonally, it is simplest to use the pump and SWG only when no one is in the pool and not bother with bonding. If the pool is left up over the winter, you should bond it properly.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: Does your pool need to be bonded to add a SWG?

    It's a permanent pool. It was buried a foot into the ground. We have been running the pump 24/7 with swimmer load. How can I bond it?
    24' AGP Sentinelle 54" , 1hp 2 speed power-flo matrix, New 250K to replace the 150k BTU heater, pool roover Jr. Aqua Trol SWG, Large deck, taylor k-2006, Majestic Stairs with colored LED, COLD BEER

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