Deep Well Pump

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cadpoint

cadpoint

Senior Member
Location
Durham, NC
Occupation
Electrician - but not by NC Law.
Finishing up one of those job's, one might know the type, lack of information everywhere,
RFI's (like it even mattered that one was submitted)! Engineering drawing turns into a bad circuit map.
It's turned into a bad situation the GC has worked off the job!

The system is 208V-4 wire, via a Poco Service Lateral.

No information on a Deep Well Pump! It's 320 feet down and is a closed circulation system (I beleive that's right).
The well is for heating or cooling.

We can't get anyone to supply any information! Owner is lost as well (so far).

My Boss has waved off turning it on, except to check rotation, (to build pressure on system), and has outright waved any responsiblity once and untill the the well aspects are addressed by the mechanical that worked on run side of water service, the drama continues ...


The conductors have insulation as thick as the conductors! # 12 AWG
The wires are Black, Red, Yellow, and Green!
Any insights from anyone, on the circuit color of the well pump?

Merry Christmas, Jesus was born this day!
 
My guess would be

Black=A

Red=B

Yellow=C

But without being sure if it's 3 phase or single phase it's hard to tell. You could check ohms from lead to lead to verify that. Maybe some of the guys that do a lot of farm work can help.

And Merry Christmas to all.
 
If the pump is single phase, it should have come with a control box with the info you need on the cover, unless they forgot to give it to you. If its three phase the resistance readings between the windings should be close to the same, if its single phase the start winding which is common to the run winding will have a different resistance, I can't remember if it it will be lower or higher, but it will not be the same. Unless it's a large system ( if you have three phase there, it must be) It's usually single phase. Good luck! Don't you just love it when they say here it is just wire it, and don't give you any info. Geothermal heatpump?
 
Just becarefull some single phase pump may not use a extra lead at all { useally Yellow } as one of the other reader pointed out check the control panel for pump that useally a pressure switch or other.

If not you can able ohm it out the first two should be about the same and third one either used or not { that for single phase motors } while three phase verison is pretty much the same all the way thru.

Merci,Marc
 
I forgot to mention if it is a three wire single phase pump, you will need the proper size control box to connect it to. The plumber probably didn't leave it there. It contains the overload and start relays along with the start capacitor. It is rated in HP and is non adjustable. You may also consider a buck/boost transformer, as I think the pumps are rated 240 volt only. (some smaller pumps around 1/2 hp can be 120, but most are 240 volts) Some smaller pumps are two wire like frenchelectrician was stating, but most are three wire here in the states for easier repair of the most common components that fail.
 
hillbilly1 said:
I forgot to mention if it is a three wire single phase pump, you will need the proper size control box to connect it to. The plumber probably didn't leave it there. It contains the overload and start relays along with the start capacitor. It is rated in HP and is non adjustable. You may also consider a buck/boost transformer, as I think the pumps are rated 240 volt only. (some smaller pumps around 1/2 hp can be 120, but most are 240 volts) Some smaller pumps are two wire like frenchelectrician was stating, but most are three wire here in the states for easier repair of the most common components that fail.
Click to expand...

Motor starter are now in-place, After you stated sizing, I realized I didn't state any in the OP and lost that note to myself ... :roll:

Same boss crunched the numbers.

Thanks for the thoughts!
 
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