Modern electrical construction; a reliable, practical guide for the beginner in electrical construction, showing the latest approved methods of installing work of all kinds according to the safety rules of the National board of fire underwriters (1905)
Horstmann, Henry C[harles], 1858- [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] joint author · Chicago, F. J. Drake & Co. · leaf 75
ble arm has been raised to the highest and lastpoint a resistance will be inserted in series with the solenoidto cut down the current and reduce the heating in the coil, 72 MODERN ELECTRICAL CONSTRUCTION. as less current is required to hold the arm in place than tomove it over the contacts.… … Fiffure 36 Starting box are wound with comparatively small wire con-nected in circuit for a short time only, generally from ten totwenty seconds, while in a speed controller the wire must be ofsufficient size to carry the current as long as the motor is run-ning. Another difference between the…
Electrical engineering
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