Hobart, H. M. (Henry Metcalf), 1868-1946 ed · Philadelphia, J. B. Lippincott · leaf 238
of the lines offorce set up by it; hence the arc that startsbetween the horns where they are near to-gether rises between them until it becomesso attenuated that it is extinguished. Priorto the introduction of the oil-break switch,horn-break switches were used extensivelyon h pr ac circuits, but,… … n Horn-break Switch free play of the arc. See Horn-type Ar-rester under Lightning Arrester. (Ref.Electricity Control, Andrews.) Switch, Hospital, a switch provided inthe controller of an electric tramcar to enablea faulty motor to be cut out of action. Switch, Interlocking, a switch so ar-ranged…
Electrical engineering
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