Galv pipe is prefered. PVC only if your pump installer knows what he is doing and is comfortable with the PVC.
Need help with submersible pump/motor selection
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Nofears67
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What about the safety rope/cable?
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If the pump installer wants to use a rope or a cable, then he is not confident with PVC. If a rope or cable comes loose, it piles up on top of the pump, and can prevent you from ever getting the pump out of the well.
I have heard of a few problems with the threaded belled ends not wanting to unscrew when you need it. Other than that 120 is plenty strong and a lot of people are using it. Shouldn't be a problem.
Masterpumpman
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Valveman said: I think I would look around for a pump man with a little more education. First there is no way a CSV can "deadhead" a pump. Anybody who thinks that, and also thinks a VFD is better than a CSV, still has a lot to learn about pump systems.
There is only two reasons a legitimate pump company would sell you a VFD. Either they are not educated on how pump systems really work, or they know exactly how they work and are only out to get as much of your money as they can.
Porky, MGWC
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Valveman said: I think I would look around for a pump man with a little more education. First there is no way a CSV can "deadhead" a pump. Anybody who thinks that, and also thinks a VFD is better than a CSV, still has a lot to learn about pump systems.
There is only two reasons a legitimate pump company would sell you a VFD. Either they are not educated on how pump systems really work, or they know exactly how they work and are only out to get as much of your money as they can.
Porky, MGWC
NGWA Certified "Master Ground Water Consultant"
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What he said!!
They don't push variable speed stuff on you so hard so that you will save money, they push it on you because it makes them more money.
Nofears67
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Is sch 120 pvc always threaded belled ends or is it sometimes solvent joint too? I want to make sure the pump company uses the correct type.
One of the main reasons for sch 80 or 120 is that it is thick enough to thread. Never glue anything down hole!
Nofears67
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Originally Posted by riverside67
3. What amperage 3 pole circuit breaker should I install in the subpanel to feed the 60GS75 pump/motor? The voltage is 230V.
Valveman's response
12 amp motor, book says 30 amp breaker.
I have decided to go with the Goulds 40GS50 due to cost and weight.
Will I still need a 30 amp breaker for a 5 hp motor?
3. What amperage 3 pole circuit breaker should I install in the subpanel to feed the 60GS75 pump/motor? The voltage is 230V.
Valveman's response
12 amp motor, book says 30 amp breaker.
I have decided to go with the Goulds 40GS50 due to cost and weight.
Will I still need a 30 amp breaker for a 5 hp motor?
A (230V) 5 HP in three phase draws 17.8 amps, the book says you need a 40 amp breaker.
The 30 amp for the 7.5 HP was assuming you were using 480V three phase. With 230V the amperage doubles.
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