GenMax GM10500iETC
Generator · GENMAX Tri Fuel Inverter Generator. Specs from the manufacturer page (checked ).

The GenMax GM10500iETC is a tri-fuel inverter generator that runs on gasoline, propane (LPG), or natural gas. It is rated at 8500 W running power on gasoline, with 10500 W maximum output, and drops to 6800 W rated on natural gas. It has a 6.9-gallon fuel tank and 60 Hz frequency.
Key features
- Tri-fuel: gasoline, propane (LPG), and natural gas; rated 8500 W on gasoline, 8000 W on LPG, 6800 W on natural gas
- Outlets: 1x 120/240V 30A L14-30R, 1x 120/240V 50A 14-50R, 4x 120V 20A 5-20R, and a 12V DC 8.3A cigarette lighter outlet
- Starting: push-button, remote start, and recoil start, plus ATS automatic control
- Parallel connectors for running with another unit
- Overload reset switch; after an overload the generator returns to normal output within 2 to 3 seconds without a restart
- Low oil shut-off and CO detect/CO alarm
- Neutral floating by default; inserting the bonding plug into the output socket switches to neutral bonded
- Battery charging port and 6.9 gallon fuel tank
What it is for
- Home backup power
- Preparing for natural disasters
Specifications
| Running watts | 8500 W |
|---|---|
| Peak / surge | 10500 W |
| Fuel | tri-fuel |
| Tank | 26.1 L (6.9 gal) |
| AC output voltage | 120/240V |
| Dimensions | 78.5 × 57.4 × 74.4 cm (30.9 × 22.6 × 29.3 in) |
From the GenMax page. Values the manufacturer does not publish are left out.
What is in the box
- Spark Plug Socket Wrench
- Dual-Purpose Screwdriver
- Funnel
- NEMA L14-30P Locking Plug
- NEMA 14-50P Industrial Plug
- Battery Charger
- Rain Cover
- LPG hose
- NG hose
- ATS cable
Similar inverter & portable generators
Pulsar PGD105TiSCO
WEN TF1050iX
WEN DF1100T
WEN DF1100X
Champion 11000-Watt Dual Fuel Home Backup Inverter
Champion 11000-Watt Remote Start Tri-Fuel Inverter
DuroStar DS10000EH
Connection and wiring
We have not linked an official manual for this model yet; see the GenMax page.
Error codes and troubleshooting
We have not found an official code table for this model yet.
FAQ
Can the GenMax GM10500iETC start a sump pump or well pump?
Starting surge matters more than running watts: this unit is rated 10500 W peak. That covers a typical 1/2 HP sump pump (about 2150 W to start). Use the calculator with your exact pump.