Questions And Answers On the National Electrical Code a Key And Index to the of
Questions And Answers On the National Electrical Code a Key And Index to the of
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To quickly assess the difficulty of the text, read a short excerpt:
) 759. What is the least spacing between bridge collector wires allowed?
Two and one -half inches; recommended that greater spacing be used whenever possible. (43-3-4. ) 760. What are the minimum sizes for collector wires ac- cording to the distance between rigid supports?
"Distance between Size wire rigid supports required Feet B. & S.
o to 30 6 31 to 60 4 Over 60 2 (43 -a -50 761. How must collectors be designed with reference to sparking?
So that it will be reduced to a minimum. (43 -b. ) Sw...itches and Cut-outs.
762. Can one main switch be used for all motors of an j electric crane?
Yes. (Italics, 43. ) OFFICIAL NATIONAL ELECTRICAL CODE 137 763. Is a cut-out and switch necessary for the main col- lector wires, and how must it be located?
Yes; located easy of access from floor. (43-0-1. ) 764. Is a cut-out and a switch necessary for leads from main collector wire on electric cranes operated from cabs; and where must they be located?
Yes; readily accessible to operator. (43-0-2. ) 765.
What to read after Questions And Answers On the National Electrical Code a Key And Index to the of?
You can find similar books in the "Read Also" column, or choose other free books by Thomas Stanislaus Mcloughlin to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
) 759. What is the least spacing between bridge collector wires allowed?
Two and one -half inches; recommended that greater spacing be used whenever possible. (43-3-4. ) 760. What are the minimum sizes for collector wires ac- cording to the distance between rigid supports?
"Distance between Size wire rigid supports required Feet B. & S.
o to 30 6 31 to 60 4 Over 60 2 (43 -a -50 761. How must collectors be designed with reference to sparking?
So that it will be reduced to a minimum. (43 -b. ) Sw...itches and Cut-outs.
762. Can one main switch be used for all motors of an j electric crane?
Yes. (Italics, 43. ) OFFICIAL NATIONAL ELECTRICAL CODE 137 763. Is a cut-out and switch necessary for the main col- lector wires, and how must it be located?
Yes; located easy of access from floor. (43-0-1. ) 764. Is a cut-out and a switch necessary for leads from main collector wire on electric cranes operated from cabs; and where must they be located?
Yes; readily accessible to operator. (43-0-2. ) 765.
What to read after Questions And Answers On the National Electrical Code a Key And Index to the of?
You can find similar books in the "Read Also" column, or choose other free books by Thomas Stanislaus Mcloughlin to read onlineMoreLess
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