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Automatic Standby Generator, 20LP/18NG kW

GENERAC

Clearance Price:
$5,140.80 / each

Price: $5,712.00 / each

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  • 4.9 Stars
  • 4.9 of 5
  • 225 reviews
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  • Item # 2ZMG9
  • Mfr. Model # 6250
  • UNSPSC # 26111604
  • Catalog Page # 1368
  • Shipping Weight 516.0 lbs.
Country of Origin USACountry of Origin is subject to change.

Technical Specs

  • ItemAutomatic Standby Generator
  • Engine Cooling MethodAir
  • kW20 LP/18 NG
  • kVA Rating20 LP/18 NG
  • Voltage240V
  • Height29"
  • Width25"
  • Length48"
  • Enclosure MaterialAluminum
  • Fuel TypeNatural Gas/ LP
  • Engine BrandGenerac OHVI
  • Engine Size999cc
  • Engine RPM3600
  • Amps @ 120/240V, 1 PhaseLP 83.3 / 75 NG
  • NG Consumption @ Half Load294 cu. ft./hr.
  • LP Consumption @ Half Load2.9 gph
  • Hz60
  • Sound Level dBA66
  • Automatic Volts RegulationYes
  • Battery IncludedNo
  • 12VDC Battery ChargerYes
  • Battery Requirements525 CCA
  • Engine (Block Heater)Yes or No
  • Fault Indicator LightsYes
  • Fuel NPT Pipe Connection Sz.3/4"
  • High Temp. AlarmYes
  • Low Oil Pressure AlarmYes
  • Min. Gas Pressure @ Generator (In WC)5 to 7/10 to 12
  • Over Crank ProtectionYes
  • Phase1
  • Power Factor1
  • Repeat of Exercise Cycle7 Days
  • Run Time Hour MeterYes
  • Main Circuit BreakerFuse Built Into Controller; Circuit Breakers are Located in the Transfer Switch
  • Over SpeedYes
  • Includes1 Ft Flexible Fuel Line Connector
  • StandardsUL, CSA, NEMA, EGSA
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Compliance and Restrictions

  • This product contains a chemical that is regulated under California Proposition 65.

    Warning: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm.

Alternate Products


Rated 4.9 out of 5 by 227reviewers.
Rated 5 out of 5 by Awesome! We had this unit installed and within 2 weeks the power went out for approx. 7 hours. Would have thought it just blinked off then back on thanks to this generator. Love it! Worked like a charm. Could not be happier! September 10, 2014
Rated 5 out of 5 by Better than 5 stars!!!!! We had our Generac 20kW and whole house switch installed in March 2014. Ever since the install we have been hoping for the power to go out (strange yes but wanting to test the investment). Finally the power went out during a thunderstorm Sept. 1st. The generator started confidently just like it does on it's weekly exercise runs. We were so pleased that we did not need to drag out the old portable generator. During the 6 hours of outage we ran, 3 TVs, 3 computers, the dishwasher, the AC, 2 fridges, 1 freezer, the sump pump, the well pump, the garage door and almost every light in the house at varying times. The Generac never missed a beat and was so quiet when it was time for bed nobody complained like they did with our old portable. Fantastic product. Exactly why my parents and in-laws installed their's a few years ago. September 2, 2014
Rated 5 out of 5 by Valuable purchase & peace of mind I'm a 70+ female on oxygen 24/7 and VERY concerned about power outages with my dependency on my oxygen converter. I purchased the whole house generator and when my power goes out, I knoiw to count to three and have it come back on, switching to my home's natural gas supply. It's unbelieveable how much I love and depend upon my Generac equipment. Even my son, who lives a 2-hour drive from me, can rest knowing I'm not without power and am in good hands. Thanks! July 17, 2014
Rated 5 out of 5 by Worth every penny Lost our power the oher day and generator kicked in and worked like a charm. It was so nice not having to worry about my fish tanks. Piece of mind is priceless July 16, 2014
Rated 5 out of 5 by peace of mind This summer, the weather has been horrendous. Lightninghas been a constant threat. Although, we have not had to rely on our generator yet, the knowledge that it will be there for us guarantees much needed peace of mind.Each week, when the ten minute test cuts on, it is music to our ears.After having been without electricity for two weeks during the aftermath of hurricane Sandy, we look at our generator as a life saver. July 16, 2014
Rated 5 out of 5 by Product is a blessing we had a portable 15000 kw generac that worked well but the manual part of going out in the dark and bad weather to start it and lift the heavy 5 gallon gas cans to fill it was not easy anymore since I am in my 70's. After hurricane Rita the problem was even finding gas. We now feel so at ease and don't worry about the frequent power outages in the woods where we live. we don't even notice the change when power goes off and then comes back on later. The Generac has really been a blessing. July 14, 2014
Rated 5 out of 5 by Dependable. I previously owned a portable Generac and upgraded to a whole house unit. The products are well made and have been very dependable. I am secure in knowing the Generac whole house generator will protect my family from power outages. June 27, 2014
Rated 5 out of 5 by Peace of Mind We are very happy with our Generac generator. After the last horrible winter we had and trying to keep our portable generator going in the extreme temps every time our power went out decided us it was time for an automatic back up generator. It is nice to have the peace of mind not to have to worry any more. June 25, 2014
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Product Q&A

(4 Questions : 4 Answers)

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Field of Industry:: Manufacturing
Product used for:: emergency back up
Years purchasing from Grainger:: 15
2 years, 2 months ago
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Answer: 
No, it does not. If you were to go and click on the Optional Accessories tab when you have this generator pulled up, it will list the possible transfer swtiches that are compatible with this generator.

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2 years, 1 month ago
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Can I install this unit in my basement and exhaust thru the wall to the outside?
1 year, 11 months ago
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Answer: 
No, this generator as most, are designed for outdoor placement only.

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1 year, 11 months ago
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If the composite mounting is either not available separately for #2ZMG9 or not recommended for use with that item then what type of base does the manufacturer recommend on installation of the 2ZMG9?
1 year, 11 months ago
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Answer: 
All of the air cooled units in this line have the composite mounting pads included as this one, 2ZMG9.

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1 year, 10 months ago
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I need a three phase generator , I would like to know if this one solve my needs.
1 year ago
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Answer: 
All Air-Cooled units are single phase only. If you are looking for a three phase generator, I would refer to a Liquid Cooled, Protector Series, or Industrial unit.
1 year ago
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