 | Francis Bacon Crocker - 1901 - 528 стор.
...wires, of over 3,500 volts, shall be considered as an extra high-potential circuit, and as coining under that class, unless an approved transforming...used, which cuts the difference of potential down to S,500 volts or less. 38. Primary Wires — a. Must not be brought into or over building, except power... | |
 | Francis Bacon Crocker - 1901 - 528 стор.
...volts and less than 3,500 volts, shall be considered as a high-potential circuit, and as cotningunder that class, unless an approved transforming device...used, which cuts the difference of potential down to SOO volts or less. S">. Wires — (See also Nos. 14, 15, and 16.) a. Must have an approved rubber-insulating... | |
 | George Velten Steeb - 1902 - 230 стор.
...of over 550 volts and less than 3,500 volts, shall be considered as a high potential circuit, and as coming under that class, unless an approved transforming...used, which cuts the difference of potential down to 550 volts or less. The wires must have an approved rubber insulating covering, must be in plain sight,... | |
 | 1902 - 738 стор.
...wires of over 550 volts and less than 3,500 volts shall be considered as a highpotential circuit and as coming under that class, unless an approved transforming...used which cuts the difference of potential down to 550 volts or less. Wires— a. Must have an approved rubber-insulating covering. The thickness of the... | |
 | 1902 - 742 стор.
...550 volts and less than 8,500 volts shall be consider cd as a highpotential circuit and as coining under that class, unless an approved transforming...used which cuts the difference of potential down to 550 volts or less. Wires— a. Must have an approved rubber-insulating covering. The thickness of the... | |
 | 1906 - 582 стор.
...of over 550 volts and less than 3,500 volts shall be considered as a high-potential circuit and as coming under that class, unless an approved transforming device is used which cuts tlIe difference of potential down to 550 volts or less. Wires — a. Must have an approved rubber insulating... | |
 | 1906 - 544 стор.
...of over 550 volts and less than 3,500 volts shall be considered as a high-potential circuit and as coming under that class, unless an approved transforming...used which cuts the difference of potential down to 550 volts or less. Wires— a. Must have an approved rubber insulating covering. b. Must be always... | |
 | International Correspondence Schools - 1908 - 754 стор.
...of over 550 volts and less than 3,500 volts shall be considered as a high-potential circuit and as coming under that class, unless an approved transforming...used which cuts the difference of potential down to 550 volts or less. Wires— a. Must have an approved rubber insulating ' covering. b. Must be always... | |
 | Saint Paul (Minn.). - 1908 - 1260 стор.
...any two wires, or over 3,500 volts, shall be considered as an extra high-potential circuit, and as coming under that class, unless an approved transforming...used, which cuts the difference of potential down to 3,500 volts or less. 2080. 34. Primary Wires. — a. Must not be brought into or over buildings except... | |
 | Henry Charles Horstmann, Victor Hugo Tousley - 1908 - 352 стор.
...550 volts and less than 3,500 volts, shall be considered as a high-potential circuit, and as coining under that class, unless an approved transforming...used, which cuts the difference of potential down to 350 volts or less. (See note following first paragraph under Low-Potential systems. 35. Wires. (See... | |
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VOLTS. Any circuit attached to any machine or combination of machines which develops a difference of potential, between any two wires, of over... 
