1. Idle Fuel Consumption: When the excavator is idling (engine running, but not performing any work), the fuel consumption can be around 1.5 to 2 gallons per hour (GPH).
2. Light-Duty Work: During light-duty tasks, such as digging in soft soil or performing landscaping work, the fuel consumption rate can range from 2 to 4 GPH.
3. Medium-Duty Work: While performing medium-duty tasks, such as digging harder soil or lifting heavy materials, the fuel consumption can increase to 4 to 6 GPH.
4. Heavy-Duty Work: When undertaking heavy-duty tasks, such as rock excavation or demolition work, the fuel consumption rate can go up to 6 to 8 GPH.
5. High-Pressure Hydraulic Functions: If the excavator is equipped with high-pressure hydraulic functions, such as a breaker or a hammer, the fuel consumption can be significantly higher.
Note: These figures are approximate and can vary between different excavator models and manufacturers. Always refer to the specifications provided by the manufacturer of your specific 14t excavator for accurate fuel consumption information.