International Library of Technology · Scranton, International Textbook Co. · leaf 613
ld never be used, butthe drop wires should be soldereddirect to, but preferably not sup-ported by, the • line wires, and thejoints should be thoroughly wrappedwith insulating tape. The cut-outsshould-be placed outside the cellars, ina dry place if possible, otherwise theyshould be placed in… … 20 INTERIOR WIRING. § 27 Rubber-Covered Wire.— a. Copper for conductors must be thoroughlytinned. Insulation for voltages between 0 and 600: b. Must be of rubber or other approved sub-stance and be of a thickness not less than that givenin the following table for B. & S. gauge sizes: From 18 to…
Electrical engineering
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