 | Louis Derr - 1910 - 524 стор.
...impossible and impracticable to employ knobs and tubes, provided the difference in potential between the wires is not over 300 volts, and if the wires are not subFig. 17. Flexible Tubing, "Flexduct" Type. Courtesy of National Metal Molding Co., Pittiburg, Pa.... | |
 | 1913 - 460 стор.
...approved metal conduit, or approved armored cable, except that if the difference of potential between the wires is not over 300 volts, and if the wires are not exposed to moisture, they may be fished if separately encased in approved flexible tubing, extending in continuous lengths from porcelain support... | |
 | Dallas (Tex.). - 1914 - 266 стор.
...Section 12), except that if the difference of potential between the wires is not over three hundred (300) volts, and if the wires are not exposed to moisture, they may be finished if separately encased in approved flexible tubing, extending in continuous lengths from porcelain... | |
 | Harry Cooke Cushing - 1915 - 332 стор.
...approved metal conduit, or approved armored cable except that if the difference of potential between the wires is not over 300 volts, and if the wires are not exposed to moisture, they may be fished if separately encased in approved flexible tubing, extending in continuous lengths from porcelain support... | |
 | Little Rock (Ark.). - 1915 - 770 стор.
...approved metal conduit, or approved armored cable, except that if the difference of potential between the wires is not over 300 volts, and if the wires, are not exposed to moisture, they may be fixed if separately encased in approved flexible tubing extending in continues lengths from porcelain... | |
 | Terrell Croft - 1917 - 446 стор.
...approved metal conduit, or approved armored cable, except that if the difference of potential between the wires is not over 300 volts, and if the wires are not exposed to moisture, they may be fished if separately encased in approved flexible tubing, extending in continuous lengths from porcelain support... | |
 | Harry Cooke Cushing - 1917 - 374 стор.
...conduit, or approved armored cable (see p. 135) except that if the difference of potential between the wires is not over 300 volts, and if the wires are not exposed to moisture, they may be fished if separately encased in approved flexible tubing, extending in continuous lengths from porcelain support... | |
 | 1919 - 444 стор.
...approved metal conduit, or approved armored cable, except that if the difference of potential between the wires is not over 300 volts, and if the wires are not exposed to moisture, they may be fished if separately encased in approved flexible tubing, extending in continuous lengths from porcelain support... | |
 | Terrell Croft - 1920 - 488 стор.
...approved metal conduit, or approved armored cable, except that if the difference of potential between the wires is not over 300 volts, and if the wires are not exposed to moisture, they may be fished if separately encased in approved flexible tubing, extending in continuous lengths from porcelain support... | |
 | New York (N.Y.) - 1913 - 254 стор.
...armored cable, except that if the difference of potential between the wires is 26. Wires — Continued. not over 300 volts, and if the wires are not exposed to moisture, they may be fished if separately encased in approved flexible tubing, extending in continuous lengths from porcelain support... | |
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... except that if the difference of potential between the wires is not over 300 volts, and if the wires are not exposed to moisture, they may be fished... 
