We have a bunch of Wells some have ground rods some don’t.
Does a well case need a ground rod to bond it?
I don’t see what that gets you. We run a VFD at 480 volts to a setup transformer up to 2100 volts made for down hole pumps (at around 1500 feet down). We have a ground pulled from the transformer bonded to the casing and motor.
Is the external bond needed
Just for info I’ll post a picture of the motor when they pull it next week.
350 hp and only about 12” round. Oh yea 20 foot long.
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A steel well casing is the ultimate ground rod in my book. The grounding on r-mix plants is usually a overlooked item and I try and make the well casing pull double duty and serve as a ground rod for plants with wells.
Are these water pumps, or oil and gas world pumps?
I've done a few in the oil and gas world and we typically bond everything, sometimes way too much. The drive enclosure, transformer case, vent box case, and any structural steel or device stands are all typically caught. Also depends on if there is a spec that may supercede anything else too.
I know it took a little bit for some inspectors to understand a well casing, or a piperack piles are a whole pile (no pun intended) better than a 3/4" round rod 10' long.
Gas pumps have breakaway unions so if you pull away with the nozzle in your tank, the coupling separates so you don 't pull the pump assy off the islands.
The wire in the hose is for strength and so it don't kink and rupture.
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