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Is there any benefit (or harm) to grounding the bonding grid of an in-ground swimming pool? My pool builder says that most electricians do it, but article 680 is silent.

Thanks,

Sim
 

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What do you mean, exactly? I can't imagine a pool bonding grid that isn't already automatically grounded. The bonding grid is just about the best possible grounding electrode imaginable.
 

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My pool builder says that most electricians do it, but article 680 is silent.
Most electricians don't know 680 very well, that is the problem. Many electrician are still not clear on the whole grounding/bonding thing in general.

NO, there is NO benefit nor is it required by code to doing this, so WHY do it? the code is so overkill in some areas (680 for example) already. If they don't required it that is saying something.



680.26 Equipotential Bonding.

(A) Performance. The equipotential bonding required by this section shall be installed to reduce voltage gradients in the pool area. See related Staff Note

(B) Bonded Parts. The parts specified in 680.26(B)(1) through (B)(7) shall be bonded together using solid copper conductors, insulated covered, or bare, not smaller than 8 AWG or with rigid metal conduit of brass or other identified corrosion-resistant metal. Connections to bonded parts shall be made in accordance with 250.8. An 8 AWG or larger solid copper bonding conductor provided to reduce voltage gradients in the pool area shall not be required to be extended or attached to remote panelboards, service equipment, or electrodes.
 
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Most electricians don't know 680 very well, that is the problem. Many electrician are still not clear on the whole grounding/bonding thing in general.

NO, there is NO benefit nor is it required by code to doing this, so WHY do it? the code is so overkill in some areas (680 for example) already. If they don't required it that is saying something.
This is a true about some electricians and on top of that each area may have it own requirements.
 

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.......and on top of that each area may have it own requirements.
Have you ever known or heard of any place that requires an EBG be connected to an electrode?
 

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Pool bonding is all about equipotential between all metal parts in and around the pool, not grounding a fault. Attaching the grid to the panel or installing a ground rod has no benefit, is not required in the code, and should not be required. Electricians that do so demonstrate very little understanding of the actual purpose of the bonding grid IMHO.
 

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There is essentially no reason to connect the bonding grid to a ground rod, especially since the bonding grid is a better grounding electrode than any rod could ever be. However, it's worth noting that any properly installed bonding grid is already connected to the system's grounding electrodes. The bonding grid includes connections to the pump motor frame and light niche, both of which are grounded and bonded to the panel and thus connected to the system grounding electrodes.
 
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