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 216
CITY current where there is a great difference of voltage. Such wires shouldbe also kept at a sufficient distance from screw heads, metal brackets,gas pipes, water pipes, and other conducting bodies, in order to preventaccidental grounds or short circuits. All instruments and switches should be… … Fig. 500.—Small switchboard suitable for two dynamos; view showing ammeters and volt-meters, switches, circuit breakers, etc. Ques. What type of switch is used on switchboards ? Ans. The knife switch. Ques. Describe a small switchboard. Ans. Fig. 500 shows one suitable for two dynamos. At thetop is…
Electrical engineering
Internet Archive · Brigham Young University · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-261-150.webp)
