Which reading indicates a generator's electrical condition?

The reading that indicates a generator's electrical condition is frequency and voltage. Monitoring voltage provides critical information about the level of electrical output provided by the generator. If the voltage is too high or too low, it can signify issues within the generator's operation or loading conditions.

Frequency is another vital parameter, as it reflects the stability and performance of the generator. A generator typically operates at a standard frequency (like 60 Hz in the US), and deviations from this standard can indicate problems such as overloading or mechanical failure.

While temperature gauges monitor the thermal condition of the generator, which is essential for operation, they do not directly indicate the electrical performance. Lubrication status pertains to mechanical health, and electrical resistance measures circuit integrity but does not provide a complete picture of the generator’s electrical condition. Therefore, frequency and voltage readings are the best indicators of a generator's performance and electrical output.