Electricians' operating and testing manual; a hand book for men in charge of electrical apparatus, repair men, trouble men, lamp trimmers, and electricians generally (1916)
Horstmann, Henry Charles, Tousley, Victor Hugo, 1875- joint author · Chicago, F.J. Drake & co · leaf 354
Figure 205 Figure 206 ground detector. The lamps shown above are not verysensitive and will not indicate a slight ground. Hencethe voltmeter is preferable. As long as both buttonsare in their normal position, the voltmeter measuresthe voltage of the system. By pressing dowa either … Figure 207 button, if a deflection is obtained, it indicates a groundon that side of the system to which the button belongs.Figure 207 shows ground detector connections usinglamps for an ordinary three-wire or three-phase sys-tem. Used in connection with the ordinary three-wire Orotmd Detectors and…
Electrical engineering · Electric testing
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