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 74
e arm to fly back and shut off the current to the motor. Thisdevice cannot be considered to take the place of the regularcut-outs, as it is not operative during the starting of the motor.It can only operate after the arm A is held in position by themagnet M. Starting boxes are made in different… … Figure 35 draws up the movable arm. When solenoids are used for thispurpose it is often advisable to arrange the connections so thatwhen the movable 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…
Electrical engineering
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