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.My pool builder says that most electricians do it, but article 680 is silent.
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.
This is a true about some electricians and on top of that each area may have it own requirements.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.