Page 1 of 2

Standby/Backup Generators

Posted: Wed Jan 06, 2016 10:32 am
by jtdumallard
Whos has them? What brands would you recommend? In the process of a new construction and strongly leaning towards installing one.

Re: Standby/Backup Generators

Posted: Wed Jan 06, 2016 10:39 am
by Forrest3
Just finished a house and put an eaton 22kw on it. Eaton and generac are the same.

Re: Standby/Backup Generators

Posted: Wed Jan 06, 2016 11:06 am
by edub20

Re: Standby/Backup Generators

Posted: Wed Jan 06, 2016 11:12 am
by jtdumallard
I'd like a discount.

Re: Standby/Backup Generators

Posted: Wed Jan 06, 2016 11:44 am
by QUACKERS
Kohler makes a very good one , Call Marty with Jim Cowden Electric.601-573-5553 He has great prices and installs.

Re: Standby/Backup Generators

Posted: Wed Jan 06, 2016 12:31 pm
by Forrest3

Re: Standby/Backup Generators

Posted: Wed Jan 06, 2016 1:30 pm
by jtdumallard
Thats not a bad price. I have been looking at 15-18k for around the same price. These units are both Koehler and Briggs n Straton. Generac doesnt have good reviews that I have found on the web.

Re: Standby/Backup Generators

Posted: Wed Jan 06, 2016 2:13 pm
by jdbuckshot
Not sure if yall would have any need on the side - if you live in the metro area - this wouldn't work


but I would recommend getting a welder generator, and getting your house wired for it

then you could use it for other options - mount it on a small trailer.

Re: Standby/Backup Generators

Posted: Wed Jan 06, 2016 5:55 pm
by simplepeddler
I have the GE model......Briggs markets it as well.

seven years old and has never failed.
one of the few units that can monitor a load to start and run two 5 ton A/C units.

Re: Standby/Backup Generators

Posted: Thu Jan 07, 2016 6:57 pm
by fivemile
I have had a 20kw Generac for years, auto switch and it's great. Will run 3 HCAC units, ref., lights, etc.

Re: Standby/Backup Generators

Posted: Thu Jan 07, 2016 8:09 pm
by SB
Jdbuckshot - why wouldn't the welder generator work in the metro area?? Thanks

Re: Standby/Backup Generators

Posted: Thu Jan 07, 2016 9:09 pm
by MudHog
Diesel and 1800 rpm would be the best. My take on this is what does the equipment coming to a storm wrecked area run on, diesel. Farmers in the area, diesel. All the other people buying gas for their generators won't be buying the diesel you need for yours. You will have more diesel available than gas. Now for the technical aspects, an 1800 rpm generator will produce a cleaner sine wave as the generator head is a 4 pole generator. 3600 rpms generators utilize a 2 pole generator due to their rpm speed. Longevity, 1800 rpm generator will last twice as long due to running half the speed. Servicing, diesel doesn't HAVE to be ran every month. Gas does or the carb will gunk up and leave the generator useless when it is needed most. These auto transfer switches are nice, but they do not load up the generator when they do their monthly runs. Running an engine for little time is more harmful than good as the engine doesn't come up to operating temperature to burn out the built up condensation. Also, you increase the chances of blow by, wetstacking, or washing the cylinders when the engine doesn't come up to temperature and held for a little while. The best run time is under a load, and preferably an 80% load. 1800 rpm generators also run quieter due to they are running at half speed and not full speed.

Stay away from NG. You will wish you didn't run it with the cost of natural gas and the amount of fuel a natural gas engine consumes due to the lower BTU rating of NG compared to gasoline.

Me personally, I have a 12.5kw KJ Series Kubota diesel. The KJ series is more or less Kubota's general use generator. Inside my home you hardly hear it. Kubota does has a SQ (super quiet) series and they are just that, super quiet. Either model can be setup with an auto start controller which would take the output signal from an auto transfer switch. I run it every couple months on my homemade load bank simply so I don't have to worry about resetting clocks and such in the house. I built my loadbank for my generator, but I have used it more working on generators for other people. Cleaning a carb and the generator running on the shop floor doesn't mean it can handle the rated load. Load bank loads up the generator and I've came across a couple I cleaned that still had trash in the carburetor because it struggled under full load. Purred like a kitten just sitting there running with nothing hooked up to it too.

Another option is if you own a tractor to get a PTO generator. This would leave one less engine to maintain in general. Figure a rough number of 1.5kw per 1hp. You want your engine sized slightly less than the generator head as you will only bog the engine down if you overdraw on the generator. Having a larger engine and you run the risk of burning up the generator head which is a pricey repair.


That is probably more than you asked for. :lol:

Re: Standby/Backup Generators

Posted: Thu Jan 07, 2016 9:40 pm
by DuckBoat
Mud hog where did you get your info on ng? Been awhile back but seems like I remember natural gas being well less than $1.00/ gge (gallon gas equivalent). Also you never have to fill a tank or worry about fuel spoilage or finding fuel in a disaster such as hurricane Katrina.

Re: Standby/Backup Generators

Posted: Fri Jan 08, 2016 9:05 am
by Rowdy53103

Re: Standby/Backup Generators

Posted: Fri Jan 08, 2016 7:37 pm
by MudHog