ARTICLE 240. OVERCURRENT PROTECTION


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ARTICLE 240. OVERCURRENT PROTECTION
ARTICLE 240. OVERCURRENT PROTECTION240.1. Scope. For any electrical system, required current-carrying capacities are determined for the various circuits—feeders, subfeeders, and branch circuits. Then these required capacities are converted into standard circuit conductors that have sufficient current-carrying capacities based on the size of the conductors, the type of insulation on the conductors, the ambient temperature at the place of installation, the number of conductors in each conduit, the type and continuity of load, and judicious determination of spare capacity to meet future load growth. Or if busway, armored cable, or other cable assemblies are to be used, similar considerations go into selection of conductors with required current-carryin…
Citation
Frederic P. Hartwell; Joseph F. McPartland; Brian J. McPartland: McGraw-Hill's National Electrical Code 2017 Handbook, 29th Edition. ARTICLE 240. OVERCURRENT PROTECTION, Chapter (McGraw-Hill Professional, 2017), AccessEngineering Export