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A filled dot where two wires are connected.
Also known as: Connection dot, Wire junction, Node dot
A filled dot at a crossing means the wires are joined; no dot means they cross without touching. Because a missing or accidental dot changes the circuit entirely, careful drafting avoids four-way junctions altogether and staggers them into two three-way ones.
Marks a connection between conductors at a crossing point; an unmarked crossing means the conductors do not connect.
Contexts: Technical drawing, Electrical equipment
Is avoided at four-way crossings in careful drafting, which offsets them into two separate three-way junctions so that a lost or smudged dot cannot change the circuit.
Contexts: Technical drawing, Electrical equipment
A small solid dot centred where two straight lines meet or cross.
Filled means a joint; hollow means a terminal.