What does a loadmeter indicate when connected to the generator output lead?

When a loadmeter is connected to the generator output lead, it provides a reading of the electrical system's current production or load. This means the loadmeter measures how much electrical current the generator is supplying to the system at any given moment, reflecting the demand placed on the generator by the electrical system.

This vital function helps in monitoring the performance and operational status of the electrical system, indicating whether the generator is operating within its designated limits. It also allows for the observation of how much load the system is under, ensuring that it does not exceed the generator’s capacity, thereby preventing potential overload situations.

Other options do not accurately describe what a loadmeter does in this context. The loadmeter does not measure the total current supplied by the battery or the generator's maximum output capacity; instead, it is focused on current production. Additionally, while efficiency of load sharing among generators is an important concept, it involves more complex interactions and coordination between multiple generators rather than a direct measure by a single loadmeter connected to an output lead.