Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 370
Use Rotshd du/n. copper weafhenproofinsulation for signal tvire Jnd lesds 3/GRAL mRE L/SHTW/^OARKEJTER … Good ground can -neciion lyith coAeand gaiv pip^. WORE •■76 indicate le^d^ clearly only upper C3^e of box^^IS shown, /fc^rs Meep to left inste-ad of to right <3Sshown, reverse /,e.3as J.3nd63iboth stations.Lightning arresters on signal wire should be spacedevery loooft These do not replace the…
Electrical engineering
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