Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 436
The flame is directed on the middle of the joint, andwhen a sufficient rise of temperature has taken place to meltthe solder readily, the joint is rubbed with rosin and solderalternately until it is thoroughly saturated with solder. Theusual precaution of brushing any points of solder off the… … of the insulation with selvedgetape before soldering. Whenbig joints are being made itis sometimes advisable to wetthe tape in order to preventthe conduction of heat alongthe copper to the insulation. Sweating.—In thisoperation the surfaces arecleaned, heated, andcovered with a film ofsolder. The…
Electrical engineering
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