Electrical tables and engineering data; a book of useful tables and practical hints for electricians, foremen, salesmen, solicitors, estimators, contractors, architects and engineers (1916)
Horstmann, Henry Charles, Tousley, Victor Hugo, 1875- joint author · Chicago, F.J. Drake & co · leaf 252
The switches Dand E are main switches controlling the coloredlamps. All lamps of one color should be connected toone or the other of these switches. From these three groups of switches circuits extendinto all borders, proscenium side lights and footlights,BO that the color scheme may be carried out… … Figure 30. The fuses or switches controlling lights not usuallymanipulated by switchboard operator are generallyworked into the vacant spaces between the groupsmentioned above. All branch circuits are preferably located behindthe board. This wall allow of trouble being instantlyrectified. ■…
Electrical engineering
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