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Книги Книги 1 - 10 з 23 у Service blocks must be covered over their entire surface with at least two coats....
" Service blocks must be covered over their entire surface with at least two coats of waterproof paint. c. Must be at least seven feet above the highest point of flat roofs, and at least one foot above the ridge of pitched roofs over which they pass or... "
Electric Lighting Specifications for the Use of Engineers and Architects - Сторінка 121
автори: Earle Abbott Merrill - 1892 - 176 стор.
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The Electrical Review, Том 8

1891
...proper insulating supports. 4. At least 7ft. above the highest point of flat roofs, and at least 1ft. above the ridge of pitched roofs, over which they...are attached. 5. Protected whenever necessary, in view of possible accidents to conductors or supports, from possibility of contact with other conducting...
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Convention

National Electric Light Association. Convention - 1892
...equal to that of the conductors they confine. 3. So placed that moisture cannot form a cross-connection between them ; not less than a foot apart and not...are attached. 5. Protected whenever necessary, in view of possible accidents to conductors or supports, from possibility of contact with other conducting...
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The Architect's and Builder's Pocket-book of Mensuration, Geometry ...

Frank Eugene Kidder - 1892 - 911 стор.
...foot apart, and not in contact with any substance other than their insulating supports. (e) Must be at least seven feet above the highest point of flat...over which they pass or to which they are attached. (d) Must bo protected by dead insulated guard irons or irirt& from possibility of contact with other...
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A Hand-book of Wiring Tables for Arc, Incandescent Lighting, and Motor Circuits

Arthur Eugene Watson - 1892 - 76 стор.
...their proper insulating supports. 5. Conducting wires carried over or attached to buildings, must be at least seven feet above the highest point of flat roofs, and one foot above the ridge of pitch roofs. Lines constructed subsequent to the adoption of these regulations...
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Standard Tables for Electric Wiremen: With Instructions for Wiremen and ...

Charles M. Davis - 1893 - 128 стор.
...foot apart, and not in contact with any substance other than their insulating supports. c. Must be at least seven feet above the highest point of flat...over which they pass or to which they are attached. d. Must be protected by dead insulated guard irons or wires from possibility of contact with other...
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Practical Dynamo Building: With Detail Drawings and Instructions for Winding

La Motte C. Atwood - 1893 - 143 стор.
...their proper insulating supports. 5. Conducting wires carried over or attached to buildings, must be at least seven feet above the highest point of flat roofs, and one foot above the ridge of pitch roofs. Lines constructed subsequent to the adoption of these regulations...
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Electrical Engineer, Том 17

1894
...foot apart and not In contact with any substance other than proper insulating supporta. 4. Must be at least seven feet above the highest point of flat...which they pass or to which they are attached. 5. Must be protected, whenever necessary, In view of possible accidents to conductors or supporta, from...
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The Electrical Transmission of Energy: A Manual for the Design of Electrical ...

Arthur Vaughan Abbott - 1895 - 586 стор.
...EXCHANGE. 161. Outside Wires. — Conducting wires carried over or attached to buildings must be (a) at least seven feet above the highest point of flat roofs, and (6) one foot above the ridge of " pitched :' roofs : (£) when in proximity to other conductors likely...
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The National Electrical Code: An Analysis and Explanation of the ...

Richard Henry Pierce - 1896 - 222 стор.
...foot apart, and not in contact with any substance other than their insulating supports. c. Must be at least seven feet above the highest point of flat...over which they pass or to which they are attached, d Must be protected by dead insulated guard irons or wires from possibility of contact with other conducting...
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Electric Lighting Specifications

Earle Abbott Merrilol - 1896 - 213 стор.
...wires having an insulation equal to that of the conductors they confine. (See Definitions). c. Must be at least seven feet above the highest point of flat...over which they pass or to which they are attached. d. Must be protected by dead insulated guard irons or wires from possibility of contact with other...
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