You know what it looks like… but what is it called?
TAKE THE QUIZ“three-wire”
The following 2 entries include the term three-wire.
three-wire generator
noun: a direct-current generator with both slip rings and a commutator used for supplying current to a direct-current three-wire system whose neutral wire is connected to the center point of a high-reactance winding connected across the slip rings and whose two main conductors are connected to the commutator brushes
three-wire system
noun: a constant potential system of electric distribution in which lamps or other receiving devices are connected between either one of two main conductors and a third wire and motors and heavy duty appliances are usually connected across the main conductors
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Merriam-Webster unabridged
