Originally Posted by BillT
This is the Generator I found online. Let me know if you all think if this is big enough to power my 1/2 HP Motor
It is too small, honestly. 240 x 5 amps = 1200 watts but only IF "already running" and under no heavy load! I honestly don't think that 3500 watt gen will handle the starting loads, which will most likely be in the 7000-8000 watt range (for a moment) as the pump is coming up to operating speed. A really good "start capacitor" will alleviate this demand to a degree.... otherwise you would need a 15,000 watt generator to get the pump started (for a split second, at least). There should
be one mounted near the well head, that is replaceable without pulling the pump, and will look similar to the ones used on large central A/C units.
I would write to the company and ask what is the minimum size generator they would recommend, and I am willing to bet they something close to 8000 watts peak/6500 running will be close.
Originally Posted by BillT
What would be a good American brand to consider?
I don't know... I was in Tractor Supply the other day and even the GENERAC gens are now Chinese, with Generac paint and decals!!! The larger XG series generators are still made in the USA, but the smaller GP "portable series" are apparently now Chinese. No matter what, they are no longer the company they once were and I would avoid their newer stuff, but would INSTANTLY buy and older 70's or 80's era Generac.
I also noticed they had a water pump with a 550 series Briggs and Stratton engine... made in China
. Kohler Command started making their engines in China two years ago, and now B&S, too?!?!?!?
Onan-Cummins portable gensets are also now Chinese
i think John Deere are also.
I do know that the higher priced gensets made in China are built to a much higher specification... the rubber hoses in the Harbor Freight ones (and all the o-rings, even the gas cap) won't last even one year.... but, the same Chinese genset from Onan-Cummins and John Deere have much higher quality rubber items in the fuel system, and will last far longer.
I did see that several Home Depot/Lowe's generators have either Yamaha or Subaru/Robin engines on them, and they would be the best bet. Even though made in China, the spec on these engines is very high and they are made to last. I don't know if I could trust any of the newer "American" brand generators.
An older (more than 10 years) Coleman with a Honda engine would be an excellent choice.
If you want old school and American made, there are some older 1800 RPM Onan gensets that are 5KW and would handle that well pump easily. i don't know if the 4KW ones would for sure, but I doubt they would have a problem, since the older Onan gensets were way underrated. The 4KW generators will put out more than 4KW when pushed hard, and not complain about it at all. These older generators are all cast iron and copper and are HEAVY HEAVY HEAVY, but will last a lifetime (seriously) and do use quite a bit of fuel. The older Generac, Hobart and Kohler units also fall into this category. All are over 20 years old by now, but seriously worth refurbishing.
If money is no object, buy an older Terex/Ameda/Ingersoll light tower with a Kubota D905 engine in it. These are rated at 6000 or 6500 watts but will exceed that for quite a while, like the old Onans will. They are also VERY fuel miserly... and we have some at work that are nearly 20 years old and have close to 20,000 hours on them. I see these used in the $2500 range.
Do not accidentally buy an older military unit if it is three-phase, unless it is 60Hz, crazy cheap and big enough to run what you want off of one phase only. If it is 400Hz, it is for aircraft it can't be made to work at all.