Dummy Load for generators are usually rated to supply sufficient power to a plant or building, based on the maximum demand required. Sufficient plant loading is not always available to safely load generators.
Under loading of the engine will cause a high wear rate due to insufficient fuel combustion and loss of lubrication resulting in cylinder bore glazing and fouling of exhaust ports and valves. Running the generator without load will not prove its performance, power capacity or life.
Proper and controlled loading is therefore essential. It increases diesel engine life by up to four times and improves the efficiency by ensuring that the engine has sufficient loading at all times.