Overview#
The Cummins C800 N6 is an 800 kW (1000 kVA) standby natural gas generator set powered by the GTA50 gas engine -- a turbocharged and aftercooled spark-ignited engine. The unit runs on natural gas or propane vapor (field selectable) and is equipped with PowerCommand controls providing isochronous governing and AmpSentry alternator protection. It carries UL 2200 listing and EPA certification for stationary emergency use.
At 800 kW, the C800 N6 enters the high-capacity segment of the Cummins gas generator lineup. It is deployed in hospitals, data centers, large office campuses, and industrial facilities where full-building gas-fired backup is required. The GTA50 platform provides the foundation for reliable operation at this power level without the fuel logistics burden of an equivalently sized diesel generator.
Technical Specifications#
| Parameter | Value |
|---|---|
| Standby Rating | 800 kW (1000 kVA) |
| Frequency | 60 Hz |
| Power Factor | 0.8 |
| Engine Model | GTA50 |
| Fuel Type | Natural gas / LPG |
| Cooling | Liquid |
| Aspiration | Turbocharged and aftercooled |
| Rated Speed | 1800 rpm |
| NG Fuel Consumption (Full Load) | ~8,000 CFH |
Our Service Experience#
The GTA50 gas engine is a large-displacement platform that requires experienced technicians and proper tooling for service. Spark plug replacement on the GTA50 is a significant service event due to cylinder count and access constraints. The turbocharger demands annual inspection for shaft play and boost pressure verification. The catalytic converter (where fitted) is a critical maintenance item at this power level -- backpressure buildup from catalyst degradation can derate the unit significantly.
Gas supply infrastructure is a major consideration at 800 kW. At approximately 8,000 CFH full-load consumption, the facility requires a dedicated high-capacity gas meter, 4-inch minimum supply piping, and an appropriately sized pressure regulator. We have seen installations where gas utility upgrades were required to support this level of demand -- coordinate with the local gas utility early in the project.
Frequently Asked Questions#
What engine does the C800 N6 use? The Cummins GTA50 -- a turbocharged and aftercooled spark-ignited gas engine rated for 800 kW standby at 1800 rpm.
What is the standby rating of the C800 N6? 800 kW (1000 kVA) at 60 Hz, 0.8 power factor. Emergency Standby Power (ESP) rating.
What are the service intervals? Oil and filter at 500 hours or 12 months. Air filter at 500 hours. Spark plugs at 1,000 hours. Major overhaul at 30,000 hours.
Can OnPoint Generators service the C800 N6 in Northern California? Yes. OnPoint Generators provides authorized Cummins natural gas generator service across the San Francisco Bay Area, Silicon Valley, and Northern California.
