This product was discontinued. For your convenience, we decided to leave this page up.
If you were looking to purchase it, you may want to have a look at the Westinghouse WGen12000, which has similar specs.
You can also try to find it second hand on eBay, by clicking on the button below.
Zoom on the Cat RP12000 E
In summary, the Cat RP12000 E is a powerful portable generator especially useful for professionals in need of safely powering high-intensity work or lighting equipment.
Power & Run Time
The Cat RP12000 E's core is the 670 cc Rato OHV V-Twin engine, which runs on gasoline. With an output of 120/240V, it provides a running wattage of 12,000W and a peak wattage of 15,000W.
Its starting mechanism is based on a simple and elegant electric starter (battery included).
With a full tank, the RP12000 E can operate for around 11.7 hours at 50% load (fuel consumption around 1.13 GPH), thanks to its fuel capacity of 13.2 gallons.
The RP12000 E generates a clean sine wave: providing <5% Total Harmonic Distortion (THD), delicate electronics can be plugged in its AC outlets safely.
The control panel provides the upcoming 8 AC outlets:
Additionally, it features 1 DC outlet: there's a 12V 8A (cigarette lighter style) receptacle allowing you to easily charge your batteries.
Even though this Cat generator isn't quite RV Ready, its L5-30R receptacle allows an easy RV connection via an L5-30P to TT-30R adaptor. Besides, due to the featured twist-lock L14-30R receptacle, the RP12000 E is transfer switch ready: you may connect it to a breaker box to power your household during a power outage.
The Cat RP12000 E has a conventional, open frame design, of the following dimensions: L35.7 x W32.7 x H35.8 in, which offers support and allows it to be raised above ground level. The generator is designed for ideal use outdoors and in rough environments.
Even though this device may be technically portable (as in movable), manipulation and transportation without special equipment can be a challenge, as it weighs 350 pounds. However, its challenging mobility is solved by its wheel kit and its folding handle, which will ease its displacement, once it is on the floor.
Further safety during transport, loading and unloading of the device is provided by a lift hook, which is placed on the top of the generator's frame.
The control panel of the RP12000 E includes a convenient meter showing you voltage, frequency and lifetime hours, helpful for the monitoring of its status and activity. To offer you even more control and easy operation during nighttime, the panel is LED-lit.
Thanks to a built-in fuel gauge, the generator allows you to quickly, conveniently and easily check the gas level at a glance.
As far as security is concerned, the generator can be used with a peace of mind, as it features an automatic low oil shut-off and an overload protection (circuit breaker).
Along the basic documentation and an owner's manual (opens in a new tab), useful for starting the generator right away, the Cat RP12000 E's package also includes these accessories: tool kit, funnel, battery charger and oil.
The Cat RP12000 E is EPA-approved and CARB-compliant. Thus, selling and purchasing this generator is allowed in each of the 50 states, including California.
Moreover, it features a spark arrestor, so it is adequate for use in forested areas.
The Cat RP12000 E versus other generators
The following charts are provided to give you an idea of how some of the key specs of the Cat RP12000 E compare to generators of similar power (between 10000 and 14000 W).
- As its dry weight is 350 pounds, the Cat RP12000 E is one of the heavier of the products which can generate 10000 to 14000 running watts. If you are concerned by weight, one of the champions in the above-mentioned power range is the A-iPower SUA13000EFI, with a dry weight of just 218 pounds.
- Thanks to an impressive running time of around 11.7 hours at 50% load, the RP12000 E benefits from a higher run time than many generators of a similar output. If you consider autonomy on a single full tank as one of the deciding factors, one of the generators in the same power range that offers the highest run time is the Powerhorse 13000ES, with around 15 hours.
- While the run time is an important parameter, it is dependent on the fuel tank’s capacity and thus, doesn’t say much on its own unless we consider fuel consumption as well. This generator is not fuel efficient compared to devices of similar output: its estimated fuel consumption stands at 1.13 GPH at a 50% load. If you are concerned with gasoline efficiency, having a fuel consumption of just 0.78 GPH, the A-iPower SUA13000EFI is a device you could look out for.
The bottom line
- Illuminated control panel
- Several accessories included
- GFCI Outlets
- Electric start
- Clean sine wave
- High run time
- No recoil back-up
- No remote start
- On the heavy side (350 lbs)
- Low fuel efficiency
Features and Specifications
|Engine||670 cc Rato OHV V-Twin|
|Voltage||AC: 120/240V 60 Hz, DC: 12V|
|Running watts||12,000 W|
|Starting watts||15,000 W|
|Running amps (@120/240V)||100/50 amps|
|Peak amps (@120/240V)||125/62.5 amps|
|Run time @50% load||11.7 h|
|Run time @25% load||Unknown|
|Automatic Voltage Regulation||Yes|
|AC outlets|| |
|DC outlets||1x 12V 8A (cigarette lighter style)|
|Fuel tank||Metal, 13.2 gal|
|Approx. dimensions (L x W x H)||35.7 x 32.7 x 35.8 in|
|Noise (lower limit)||Unknown|
|Security||Low oil and overload protection|
|Neutral||Bonded to frame|
|Accessories included||Oil, funnel, tool kit, battery charger, battery, and wheel kit|
|Other model numbers||502-3700|
Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.
Caterpillar Inc., often abbreviated as simply CAT, is an American engineering corporation, whose product range includes machinery, engines, financial products, mobile phones and of course, power generators. The company, founded in 1925, is one of the backbones of the US Dow Jones index and is placed among the Fortune 500 list. While CAT mainly focuses on industrial scale generators, it also provides a wide range of portable and household-scaled devices. CAT portable generators are engineered and designed in Mossville, Illinois, and Belfast, Northern Ireland. However, their production is outsourced to China.
The Cat RP12000 E is covered under a warranty for up to 2 years. This warranty may be limited and may not cover all parts of the generator.
For more information about the warranty of Cat generators, please consult Cat's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-844-PWR-ME-UP (844-797-6387).
Questions & Answers
What can it power?
|Item||Running Watts||Starting Watts|
|At home||Sump pump (1/2 hp)||1050||2150|
|Furnace fan (1/2 hp)||875||2350|
|Refrigerator (energy star)||192||1192|
|Total||9587 W||11062 W|
|For work||Electric welder||9000||9000|
|Electric fence (25 miles)||250||250|
|Total||9580 W||9580 W|
What is the thd of this unit? (Asked April 28, 2020)
As indicated in the table above, the THD is <5%.
Who makes the cat rp12oooe engine (Asked January 30, 2021)
The engine is manufactured by Rato.