Hobart, H. M. (Henry Metcalf), 1868-1946 ed · Philadelphia, J. B. Lippincott · leaf 329
•S ^O, JJ-B CgW … Wallis-JoneB Earth-Leakage Cut-Ont earth, and so that the circuit cannot bepermanently re-established until the leakhas been removed. The instrument and its connections maybe explained by the aid of the accompanyingdiagram, in which Tj and Tj represent thepoints of connection from the mains, and…
Electrical engineering
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