Thank you.
So I'm ready to run conduits from my electric subpanel to the well in preparation for the slab and I have a couple questions.
1) I'll be getting a 3 phase Franklin pump panel with ESP. Does this panel sit at the discharge of the well or can I mount it to the wall of the well building? It can be inside or outside of the building and hanging on a wall is good. You just need at least 3' of clearance in front of it to be code.
2) If to the wall of the building, what size conduit should I install for the 3 phase wiring from the panel to the well? {distance about 10'} Depends on the size of wire but, usually 3/4 will work.
3) Does the pressure switch get wired into the pump panel? I assume I should install a conduit for that wiring too before I pour the slab, correct? Two wires and a ground to the pressure switch, again 3/4 conduit.
4) Any other conduits I should run that I'm not thinking of? Power to the panel, power from panel to well head, and control wires to the pressure switch should be all.
Thanks!
Running full out for irrigation, the gallons per kilowatt would be the same. You would just get through 33% faster with the 7.5 HP. The 7.5 HP would cost more up front and later on when a replacement is needed but, would deliver 33% more water or get across 33% faster.
Using a CSV when needed just for the house, the 7.5 HP would be pulling about a 4 HP load, or the 5 HP pump would be pulling about 3 HP load. The house doesn’t use much water so this would probably only be about 5 dollars a month difference.
It appears that the 55 and 40 GS50 series pumps would both meet this criteria, the 60GS75 woulod just give me a lot more head and ability to expand the system if I ever wanted to, correct?
A couple other things...
1. Will the 2nd pressure tank need anything special on its plumbing if it is located at the house pad or can it just simply be tee'd into the 2" line coming from the well and 1st tank located at the well?
Just tee it in. A pressure gauge would be nice but, you can just use a tire gauge on the top of tank to test the pressure.
2. What pressure setting should the 2nd tank be set at?
After the system is up and running, note the lowest pressure you see at this tank while using maximum flow. Then adjust the air pressure to about 5 PSI below this lowest observed pressure.
3. What amperage 3 pole circuit breaker should I install in the subpanel to feed the 60GS75 pump/motor? The voltage is 230V.
12 amp motor, book says 30 amp breaker.
Thanks!
Pump Panel should already have proper fuse or breaker and overload.
BTW, even a home owner can go to Driveswarehouse.com and pay only 153 bucks for a VFD that is much better than any of the ones put out by the pump and motor companies. Installers who are educating themselves about VFD's are now using these because they have so many more adjustable parameters, and they cost much less. That is until they realize that the CSV is far superior to any VFD.
4) Any other conduits I should run that I'm not thinking of? Power to the panel, power from panel to well head, and control wires to the pressure switch should be all.
I like the flex tight conduit and connectors.
I see you want to set the pump on pvc.
DO NOT DO THAT! It will break off.
That motor will fatigue the pipe quick ,and the pipe will break and the pump WILL fall.
Anything over a 2hp should be set on steel and not set on pvc.
Travis
Ditto Ditto Ditto!
I didn't do up a quote because it sounded like you had gone for the one pump fit's all scenario. And you never told me what your max usage for the home would be.
I prefer 2" galv pipe also but, I have installed many pumps larger than this on PVC pipe without any problems. I just use a CSV so there is not enough cycling to unscrew or destroy the pump. The CSV makes a big difference, because when running low flow for 24 hours, the pump will only cycle once instead of 720 times..
This is awkward, but...
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