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A small semicircular hop where wires cross without joining.
Also known as: Wire hop, Crossover arc, Bridge symbol
A small arc carrying one wire over another says the two do not connect. It is an older convention than the plain unmarked crossing and is still used where a drawing might be reproduced badly, since an arc survives a poor copy in a way a missing dot does not.
Marks two conductors crossing without connection, one drawn hopping over the other in a small arc.
Contexts: Technical drawing, Electrical equipment
Is preferred where reproduction quality is uncertain, because it states the absence of a connection positively rather than by the absence of a dot.
Contexts: Technical drawing, Electrical equipment
A straight line interrupted by a small semicircular arc arching over a second line that passes beneath it.