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Wiring diagrams of electrical apparatus and installations (1913)
McGraw-Hill · New York, McGraw-Hill Book Company · leaf 132
f » <^ <> 6 <;> •<{, 4 ,^^^ Two-Wire Distribution.Fig. 196.—Distribution systems. CONSTANT POTENTIAL DISTRIBUTION 121 … Closet System of Wiring. -&■©■■©■e-Electric wiring
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