What is a loadmeter in an aircraft electrical system?

• A. A type of ammeter installed between the generator output and the main bus in an aircraft electrical system.
• B. An instrument used to measure fuel flow.
• C. A device used to measure ambient air temperature.
• D. A voltmeter across the starter motor

Answer: (A)

The loadmeter shows how much electrical load the aircraft’s generator is supplying. In a typical system, it’s a type of ammeter connected between the generator’s output and the main bus so you can see the current drawn by the aircraft’s electrical loads. This lets you monitor whether a generator is carrying its share of the load, detect overload, and notice if another generator has failed and the remaining one is carrying more demand. It’s not used for fuel flow, outside air temperature, or voltage across the starter motor, which are measured by other instruments.