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Книги Книги 21 - 22 з 22 у Underground Conductors. a. Must be protected against moisture and mechanical injury....
" Underground Conductors. a. Must be protected against moisture and mechanical injury where brought into a building, and all combustible material must be kept from the immediate vicinity. b. Must not be so arranged as to shunt the current through a building... "
Electric Lighting Specifications for the Use of Engineers and Architects - Сторінка 168
автори: Earle Abbott Merrill - 1896 - 213 стор.
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New Code of Ordinances of the City of New York: Including the Sanitary Code ...

New York (N.Y.) - 1922 - 621 стор.
...building, and all combustible material must be kept from the immediate vicinity. b. Underground conductors must not be so arranged as to shunt the current through a building around any catch-box. c. Where underground service enters building through tubes, the tubes shall be tightly closed at outlets...
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Encyclopedia of Engineering: A Treatise on Boilers, Steam Engines ..., Том 3

Calvin Franklin Swingle - 1906
...brought into a building, and all combustible material must be kept from the immediate vicinity. b. Must not be so arranged as to shunt the current through a building around any catch-box, By reference to Figure 143 the meaning of this rule will be made clear. With wires run as shown it...
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