In the early days of electric lighting, arc machines were made to operate 1, 2, or 3 lamps. ... much care cannot be taken not only to insulate the wires and locate them out of reach, but also to insulate the lamps. ... Lamps must not be connected in series-parallel or parallel-series and under no circumstances should they beanbsp;...
Title | : | Storage batteries ; Incandescent lighting ; Arc lighting ; Interior wiring ; Modern electric-lighting devices ; Electric signs ; Electric heating |
Author | : | International Correspondence Schools |
Publisher | : | - 1908 |
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