Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 165
r crosses between them almost impossible. Figure 74 represents the moulding with a piece cut away onthe left side to expose the wire. In case any accidental contact between the wires should hap-pen, caused either directly or indirectly by the contact of anymetallic conductor, such as a gas or water… … Fig. 73. electric distribution this device is intended to play a partanalogous to that performed by the safety valve in a steamboiler or an overflow pipe in a system of water supply. It con-sists simply of a short piece of wire, fusible at a comparativelylow temperature, which is inserted in and…
Electrical engineering
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