 | William A. Radford - 1913 - 912 стор.
...cut-out and switch must be arranged to cut off current from all devices including meters. b. Must always be placed in dry, accessible places, and be grouped as far as possible. In risks having private plants, the yard wires running from building to building are not generally... | |
 | Harry Cooke Cushing - 1915 - 332 стор.
...switches conveniently located on the mains or if the generators are near at hand. Switches should always be placed in dry, accessible places, and be grouped as far as possible. Single-throw knife switches should be so placed that gravity will not tend to close them. Doublethrow... | |
 | Walter Benedict Weber - 1916 - 164 стор.
...the point where the wires enter the building, and arranged to cut off the entire current. Must always be placed in dry, accessible places, and be grouped as far as possible. Single-throw knife switches must be so placed that gravity will not tend to close them. Double-throw... | |
 | Harry Cooke Cushing - 1917 - 374 стор.
...switches conveniently located on the mains or if the generators are near at hand. All switches should be placed in dry, accessible places, and be grouped as far as possible. All knife switches should be so placed that gravity will not tend to close them. (See cut p. 107.)... | |
 | Terrell Croft - 1917 - 446 стор.
...entrance cut-out, but to install an entrance switch at each building. 246. If/. SWITCHES. Must always be placed in dry, accessible places, and be grouped as far as possible. (See No. 19c.) Single-throw knife switches must be so placed that gravity will not tend to close them.... | |
 | Terrell Croft - 1920 - 488 стор.
...that the neutral cannot be opened without opening both outside wires. 24b. If/. SWITCHES. Must always be placed in dry, accessible places, and be grouped as far as possible. (See No. 19c.) Single-throw knife switches must be so placed that gravity will not tend to close them.... | |
 | New York (N.Y.). Board of Aldermen - 1920 - 904 стор.
...such that the neutral cannot be opened without opening both outside wires. b. Switches must always he placed in dry, accessible places, and be grouped as far as possible (see §419c of this chapter). Single-throw knife switches must be so placed that gravity will not tend... | |
 | New York (N.Y.) - 1922 - 636 стор.
...meters. Service switches must indicate plainly whether they are open or closed. b. Switches must always be placed in dry, accessible places, and be grouped as far as possible (see § 419c of this chapter). Singlethrow knife switches must be so placed that gravity will not tend... | |
 | Calvin Franklin Swingle - 1906 - 488 стор.
...off. A switch is also useful in cases of trouble on the wiring, to allow of repairing. b. Must always be placed in dry, accessible places, and be grouped as far as possible. Knife switches must be so placed that gravity will tend to open rather than close them. When possible,... | |
 | New York (N.Y.) - 1913 - 254 стор.
...other switches conveniently located on the mains or if the generators are near at hand. T>. Must always be placed in dry, accessible places, and be grouped as far as possible. (See No. 19 <O Single-throw knife switches must be so placed that gravity will not tend to close them.... | |
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... b. Must always be placed in dry, accessible places, and be grouped as far as possible. Knife switches must be so placed that gravity will tend to open : rather than close the switch. 
