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The term, 'bus', in 'busbar', comes from the word, 'omnibus', meaning 'to serve all'.

A busbar, then, is a copper bar that connects several independent circuits together. For example, a generator might be connected to a busbar, serving several circuits all connected to that same busbar.

There are separate busbars for line, neutral, and earthing (grounding) connections.

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Ottis Dickens

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2y ago

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