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Kohler 20RESAL SA4--20kW--w/100A ATS&LC--1Ph--NG/LP

…Features 20 kW Standby Unit & 200A Indoor Auto Switch/Load Center

This standby generator is best suited for: 1)large homes (within the range of 4000 - 5300 square feet); 2)small to medium-sized home-based or similar businesses (must use standard single-phase electricity).

The 20 kW standby package from Kohler includes an air-cooled generator with the company's own V-twin powerplant and a 100-amp (RXT-series) indoor-mount automatic transfer switch/load center (16 circuits). Motor is equipped with pressurized lubrication system. Digitally-regulated alternator produces sine wave with +/-1% voltage fluctuation. Fuel conversions on this generator model can be executed in the field, quickly and without the assistance of a technician. Self-enclosed base means that no concrete mounting pad will be necessary for installation. Composite enclosure 100% corrosion proof - will outlast both rust-resistant steel and aluminum. Also permits easy wiring (electrical and fuel connections can be made through enclosure wall). The 20RESAL-SA4 genset should run central heat/AC, at least six of a home's largest appliances, or a satisfactory combination of both for most residential applications. With output of 69 dbA during normal operation, this is not an especially quiet machine for tightly-packed urban or suburban locations. Comes with 5-year warranty. This generator
set combination is CARB approved, available to California residents.

  • Important: Please see the shipping tab for information regarding the liftgate shipping option and residential versus commercial deliveries.

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    Model:  20RESAL-SA4
    Price:  $7,125.99
    Sale:  $5,872.00

    Model Specs

    Manufacturer: Kohler
    Model #: 20RESAL-SA4
    Color: Tan
    Enclosure: Polymer
    Engine Make: Kohler
    Transfer Switch Included?: Yes
    Price: $5,872.00

    Rated Power (Liquid Propane): 20 kW
    Rated Power (Natural Gas): 18 kW
    Phase: 1
    Frequency: 60 Hz
    Voltage: 120/240
    Rated Amps: 83.3 @ 240 Volts(LP)/75.0 @ 240 Volts(NG)
    Rotor Poles: 2
    Mainline Circuit Breaker: 100 Amps

    Engine Type: V2
    Intake Method: Carburetor
    Cylinder Block: Aluminum
    HP/cc: 30.9 (LPG)/27.1 (NG); 999
    Number of Cylinders: 2
    Compression Ratio: 8.8:1
    Lubrication Method: Pressurized
    Valve Arrangement: Overhead
    Engine Cooling: Air
    Fan Type: NA
    Engine rpm: 3600
    Governor System: Electronic
    Ignition System: Electronic
    Starter Voltage (DC): 12
    Battery Required (Volts/Cold-Cranking Amps): 12/500
    Startup Delay (After Power Interruption): Programmable
    Engine Warm-Up Duration: Programmable
    Engine Cool-Down Period: Variable (Temperature Based)
    Fuel Type: Natural Gas (NG)/Liquid Propane Gas (LPG)
    Fuel Consumption (NG @ Exercise): 2.0 Cubic Meters/Hour
    Fuel Consumption (NG @ 25% Load): 3.6 Cubic Meters/Hour
    Fuel Consumption (NG @ 50% Load): 4.6 Cubic Meters/Hour
    Fuel Consumption (NG @ 75% Load): 6.9 Cubic Meters/Hour
    Fuel Consumption(NG @ Full Load): 8.0 Cubic Meters/Hour
    Fuel Consumption (LPG @ Exercise): 1.0 Cubic Meters/Hour
    Fuel Consumption (LPG @ 25% Load): 1.7 Cubic Meters/Hour
    Fuel Consumption (LPG @ 50% Load): 2.3 Cubic Meters/Hour
    Fuel Consumption (LPG @ 75% Load): 3.1 Cubic Meters/Hour
    Fuel Consumption (LPG @ Full Load): 3.9 Cubic Meters/Hour

    Convenience Features
    Automatic Voltage Regulation: Yes
    Low-Voltage Protection: Yes
    High-Voltage Protection: Yes
    Low-Oil Shutdown: NA
    Overspeed Protection: Yes
    High-Temperature Protection: Yes
    Starter-Overcrank Protection: Programmable
    Low-Battery Protection: Yes
    Built-In Battery Charging Capability: Yes
    UL Listed: Yes
    External-Fault Capability: No
    Internal-Fault Protection: No
    Incorrect-Wiring Protection: No
    Mainline Circuit-Breaker Protection: Yes
    Safety Fusing: No

    Weight: 446 lbs
    Dimensions (Inches): 48.0L x 26.2W x 29.0H
    Decibels (@ 7 Meters/23 Feet): 69
    Compliance: 50-State US

    Transfer Switch

    Manufacturer: Kohler
    Model #: JFNA-0100B
    Model Description: Open-Transition 100-Amp Single-Phase Indoor Switch/Load Center (RXT-Series)
    Rating: Open-Transition
    Built-In Load-Shedding Capability?: No
    Price: $735.00

    Voltage (AC): 120/240
    Phase: 1
    Frequency: 60 Hz
    Maximum Generator kilowatts: NA
    Rated Amps: 100
    Maximum Withstand Amps: 10000
    Number of Poles: 2
    Number of Circuit Breakers: NA

    Power Management
    Startup Delay (After Power Interruption): NA
    Engine Warm-Up Duration: NA
    Engine Cool-Down Period: NA
    Exerciser: NA
    Minimum Run Time: NA
    Return to Utility (Retransfer): NA
    Voltage Sensing (Normal Power Source): Yes
    Voltage Sensing (Standby Source): Yes
    Frequency Sensing (Standby Source): Yes

    UL Listing: Yes
    Weight: 26 lbs
    Dimensions (Inches): 6(Depth) x 13W x 24H
    Cabinet Type: NEMA 1


  • 5-year/2000-hours manufacturer limited warranty

  • Shipping

    The T-REX Free Shipping Pledge:
    The manufacturers we work with are large concerns that ship multiple items each day. This enables them to attain the best shipping rates available. T-REX passes these savings on to our customers by providing free shipping to any commercial or residential address in the continental United States. This is the T-REX pledge. We will adhere to it even when a freight carrier adds one-time or unanticipated shipping fees. Try obtaining these terms from another Internet-based generator seller.You will not find a more customer-friendly policy than ours.

    About Lift Gates:
    Typical delivery trucks are designed to be unloaded at docks, or by forklifts. In other words, they are designed to deliver to commercial locations where such options are available. By contrast, a lift gate-equipped truck lowers heavy items from the truck trailer (which can be several feet high) to the ground, using a hydraulic mechanism similar to an elevator. If your delivery will go to an address not equipped with a loading dock, and you don't have access to a forklift, then selecting the lift-gate delivery option is a convenient alternative.

    A generator from T-REX can weigh hundreds of pounds. Without access to a loading dock or forklift, unloading one safely may require several able-bodied individuals. Delivery drivers are NOT required by their companies to help customers unload.Unless you are certain that a sufficient number of helpers will be available during the delivery, we urge you to specify the lift-gate shipping option before checking out. Charge for the lift-gate is $75.00, and is NOT included in the Free-Shipping Pledge offered by T-REX. We feel, however, that it is worth the investment.

    Residential Delivery:
    You need to inform us if your delivery will be going to a residential address. Freight companies need to know this because many residential areas can't be serviced by large semi trucks. The generator will instead be loaded onto a smaller truck tailored to home deliveries. A home which serves as a place of business (regardless of the presence of company name/signage), if located in a residential area, is still considered a residential address for shipping purposes. Please select the residential delivery option if applicable. T-REX agrees to pay all additional residential delivery costs, but to do so, we must be properly informed before shipping arrangements are made.

    To select your choice of residential or commercial delivery, please see the purchase options in the Add To Cart area.

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    T-Rex Generators distributes products from many different standby and portable generator manufacturers at substantially discounted prices. These represented companies include: Asco automatic transfer switches, Briggs & Stratton generators, Winco generators, Generac Generators, GenTran transfer switches, Reliance Controls Transfer Switches, and Zenith automatic transfer switches. T-Rex also carries Honda powered generators which have the same time-tested Honda engines as the substantially more expensive Honda generator brand units.