If a generator operating in parallel isn't taking too much of the load, which adjustment should be checked?

In a parallel generator setup, if one generator is not taking on a substantial portion of the load, it's essential to inspect the gain, which relates to how the generator responds to changes in load. Gain adjustments help control the generator’s voltage and frequency stability. If the gain is set too low, the generator may not be properly responding to load changes, resulting in it sharing less load than it should. By checking and potentially adjusting the gain, operators can ensure that the generator is capable of handling the load appropriately and maintaining balance with other generators in parallel operation.

Other options, while they can affect the overall performance of the generator, do not directly address the issue of load sharing. For instance, running speed is more about the mechanical aspects of the engine rather than its electrical response to load. Voltage output can be a consequence of gain settings, but it’s not the immediate factor to check if load sharing is the problem. Fuel flow relates to the generator's power output, but it does not specifically regulate how effectively it adjusts to varying loads in parallel operation.