Definition
An electrical bus in a turboprop airplane that is supplied directly by the engine-driven generators. It distributes generator-produced power to the airplane's electrical loads and feeds other buses (such as the battery bus) through tie connections.
Plain English
A common power rail in the airplane that the generators feed into. Anything connected to it draws its power from the generators.
Context Anchor
Seen in turboprop electrical system descriptions, especially when learning how engine-driven generators feed the airplane's electrical system.
Derivation
Bus' in electrical work is short for 'busbar,' from the Latin 'omnibus' meaning 'for all.' A busbar is a shared conductor that carries power 'for all' the connected circuits. The 'generator' part simply identifies which source feeds this particular shared rail.
Why Pilots Care
Understanding the generator bus helps pilots diagnose electrical failures and know which systems lose power when a generator is offline.
Analogy
Think of it like a power strip fed by one source. The generator supplies the power, and the generator bus is the shared connection that sends that power to several users.
Intuition Check
A generator bus is not a vehicle and not the generator itself. In this context, bus means a common electrical connection point that distributes power.
Example Sentence 1
After the right generator dropped offline, its loads transferred automatically to the opposite generator bus.
Example Sentence 2
During the generator malfunction checklist the crew isolated the generator bus to prevent further system drain.