Pool equip bonding question

[70runner]

Updating my pool subpanel from older Intermatic mech timer to digital/wireless controller. Original feeder (in a Zinsco panel - topic for another day), two SP 40amp CBs, used twin #12awg on each breaker . Fortunately, using #1 son as puller, we were able to pull new 4 wire feed through about 75ft of 3/4 pvc conduit between Zinsco and equip pad. Equipotential bonding at equip pad is incomplete, connecting only 1 of 2 pumps and heater. The equip pad does have a nearby GEC which the bonding wire is connected to.

I understand the GEC should be connected directly to the detached subpanel ground bus. I've seen recommendations against connecting the equipotential grid to a GEC, though there would seem to be an "indirect" connection to the grid via the subpanel ground bus and equipment EGCs. Can't find a direct treatment of this in 680. Comments?

 

[jumper]

While as an EE you are qualified to participate on this form, we do not answer DIY questions. This seems to be a personal project and not job related.

I am sorry for the inconvenience, but I closing this thread.

I am closing this thread, in accordance with the Forum rules. This Forum is intended to assist professional electricians, inspectors, engineers, and other members of the electrical industry in the performance of their job-related tasks. However, if you are not an electrician or an electrical contractor, then we are not permitted to help you perform your own electrical installation work.