 | Calvin Franklin Swingle - 1906 - 488 стор.
...run from pole to building. b. Must be so placed that moisture cannot form a cross connection beteen them, not less than a foot apart, and not in contact with any substance other than their insulating supports. Wooden blocks to which insulators 245 are attached must be covered over... | |
 | Saint Joseph (Mo.). - 1907 - 138 стор.
...foot apart, and not in contact with any substance other than their insulating supports. They must be at least seven feet above the highest point of flat...over which they pass or to which they are attached. Sec. 17. The city electrician or duly authorized inspector or other person in charge of said department... | |
 | Charles Edwin Knox - 1907 - 336 стор.
...must be covered over their entire surface with at least two coats of water-proof paint. c. Must be at least seven feet above the highest point of flat...one foot above the ridge of pitched roofs over which pass or to which they are attached. Roof structures are frequently found which are too low or much... | |
 | 1890 - 768 стор.
...Alcohol, 4 parts ; Glycerine, 1 part. 10. 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 pitched roofs. Lines constructed subsequent to the adoption of these regulations... | |
 | 1913 - 242 стор.
...so placed that moisture cannot form a cross connection between them, and except when run in conduit, not less than a foot apart, and not in contact with any substance other than their insulating supports. Wooden blocks to which insulators are attached must be covered over their... | |
 | Joseph Gerald Branch - 1913 - 316 стор.
...so placed that moisture cannot form a cross connection between them, and except when run in conduit, not less than a foot apart, and not in contact with any substance other than their insulating supports. Wooden blocks to which insulators are attached must be covered over their... | |
 | Henry Charles Horstmann, Victor Hugo Tousley - 1916 - 458 стор.
...as to conform to rules for unlined conduit except that conduit system must be waterproof. c. Must be at least seven feet above the highest point of flat...over which they pass or to which they are attached and roof structures must be substantially constructed. For conduit work exposed to the weather all... | |
 | Richmond (Ind.) - 1916 - 504 стор.
...near the point of crossing as possible. Wires must be at least seven (7) feet above the highest part of flat roofs, and at least one foot above the ridge...which they pass or to which they are attached. Must be brought below the roof of any building, commencing as high up as possible, and be run straight down... | |
 | New York (N.Y.) - 1913 - 254 стор.
...so placed that moisture cannot form a cross connection between them, and except when run in conduit, not less than a foot apart, and not in contact with any substance other than their insulating supports. Wooden blocks to which insulators are attached must be covered over their... | |
 | American Society of Mechanical Engineers - 1898 - 1416 стор.
...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...over which they pass or to which they are attached. d. Must be protected by dead insulated guard iron or wires from possibility of contact with other conducting... | |
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between them, not less than a foot apart and not in contact with any substance other than proper insulating supports. 4. 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... 
