Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 5 of 5

Thread: Bonding question for our electricans in the group

  1. Back To Top    #1

    Join Date
    Jun 2013
    Location
    Philadelphia, PA
    Posts
    143

    Bonding question for our electricans in the group

    First, I understand each local entity has different codes. I also understand getting someone "local" to interpret them for me is probably going to be like pulling teeth with our township. So just trying to do my homework and educate myself a little. Any advice I get will absolutely be checked with the proper authorities (When I can find them!)

    Regardless, here's my scenario. Looking to add a heat pump. Electrical service is already in place at the sub panel for the pool, so no long distance runs there. My question is on bonding.

    I understand the basic difference between grounding and bonding. We have an in ground fiberglass pool. There was a bonding wire run around the perimeter of the pool before concrete was poured (I saw it). We have nothing metal in the pool that would require bonding (Ladders, handrails, etc.) We do have two LED lights, but all plastic.

    All of the equipment on our pad is bonded. There is a special PVC pipe connector from the main drain that the bonding wire starts at. It then loops through the pump then to the sub panel box. On the sub panel box, it loops through a termination point on the outside of the box - it does NOT enter the box. From there, it then runs to what appears to be a ground rod.

    That's where I get throw. Ground rod? Why? I did some digging and did find in a Hayward heat pump manual (Not the one I'm getting) this text -

    "On some older pools, this substructure bond wire may not exist. In these cases, a 6 to 8 foot solid copper rod must be driven into the ground near the equipment."
    (http://www.hayward-pool.com/pdf/manu...ump-R-410A.pdf)

    So now I'm really lost. I thought this was a no-no, but the more I read, the more it seems some places (Especially Canada) require a grounding rod in the bonding system. I thought that defeated the purpose. Anyway, I DO know that if there is a ground running around the perimeter of my pool, it does not appear run over to the equipment pad (Not sure if it should be or not, not finding anything on that one - if not, where does it terminate?)

    Final question. This was really my original question when I began reading. If I add a heat pump, do I have to add a completely new bonding wire to all components on the pad so it's continuous? Or can I lug onto the existing bonding wire?
    Leisure Pools Riv 30, 8500 gal, IG fiberglass, 200 sqft cart filter (Clean & Clear 200), Intelliflo 3HP variable speed pump, Aqua Rite SWG, auto cover, installed 5/2013
    Aquacal Superquiet 110, installed 6/2014
    TFT 100

  2. Back To Top    #2

    In the Industry

    Join Date
    Mar 2014
    Location
    United States
    Posts
    23

    Re: Bonding question for our electricans in the group

    I would go to the existing bonding wire.
    Owner of Pool Service Pro, Hilmar, Ca.
    Biggest fish shot, 35 pound halibut, this was not in my 12,000 AG pool, Kreepy krawly vacuum that's obsessed with tying itself into knots.

  3. Back To Top    #3
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Bonding question for our electricans in the group

    You can connect to the existing bonding wire with an approved split bolt. It is the loop around the pool that needs to be continuous.

    Canada does not require a ground rod, it requires that the bonding system be connected to the grounding system.

    In most places ground rods connected to the bonding system are discouraged, though not prohibited. Every now and then you run into confusion about the disallowed/discouraged/allowed/required aspect of that, which mostly has to do with the rules changing over time.

    One thing to keep straight: there is the grounding system, and the bonding system. They are separate wires belonging to separate systems. There may be a ground rod on the bonding system. That doesn't make it a grounding system, it is still a bonding system. Ground is never run around the pool, bonding is always run around the pool.

    Do you know if you have a water bond or not? A water bond is a fairly new rule, which requires the bonding system to be connect to a metal plate in the water. Retrofitting one is probably not required, but it is generally a good idea.
    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

  4. Back To Top    #4

    TFP Guide

    Join Date
    Jun 2012
    Location
    western NY
    Posts
    1,557

    Re: Bonding question for our electricans in the group

    Jason pretty much covered it. A ground rod, separate from the facility grounding system can be on a bonding system and will not cause any problems. As for your area requirements, it depends on what code cycle of the NEC Penn is on and if there are any addendums that may be local to your area.
    Unknown make 18' above ground (bought used in 1999) Sparco sand filter. Hayward 100,000 BTu heater. 2 speed pump

  5. Back To Top    #5

    Join Date
    Jun 2013
    Location
    Philadelphia, PA
    Posts
    143

    Re: Bonding question for our electricans in the group

    Thanks all, good information. Yes, the bonding system is definitely separate from the ground system. And we do have a water bond - it's on the incoming PVC from the main drain.
    Leisure Pools Riv 30, 8500 gal, IG fiberglass, 200 sqft cart filter (Clean & Clear 200), Intelliflo 3HP variable speed pump, Aqua Rite SWG, auto cover, installed 5/2013
    Aquacal Superquiet 110, installed 6/2014
    TFT 100

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •