St. John, Thomas M. (Thomas Matthew), b. 1865 · New York, T. M. St. John · leaf 120
an iron pipeof convenient length forhandling. Fig. 157shows secftions of man-holes and various devicesused in conduit work. 141. MiscellaneousAppliances. When thecurrent enters a house for incandescent lighting purposes, for example, quite a … Il8 HOW E1,ECTRIC CURRENTS ARE DISTRIBUTED. number of things are necessary. To measure the cur-rent a meter is usually placed in the cellar. In newhouses the insulated conducflors are usually run through some sort of tube whichadls as a double pro-tedlion, all being hiddenfrom view. Fig. 158shows a…
Electricity
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