UNDERFLOOR-RACEWAY WIRING


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UNDERFLOOR-RACEWAY WIRING
UNDERFLOOR-RACEWAY WIRING245. Underfloor-raceway systems are used principally in office buildings for the installation of the wiring for telephone and signal systems and for convenience outlets for electrically operated office machinery. They provide a flexible system by which the location of outlets may be easily changed to accommodate the rearrangement of furniture and partitions. The NEC allows their use when embedded in the concrete or in the concrete fill of floors. Their installation is allowed only in locations which are free from corrosive or hazardous conditions. No wires larger than the maximum size approved for the particular raceway shall be installed. The voltage of the system must not exceed 600 V. The total cross-sectional area of all conductors i…
Citation
Terrell Croft; Frederic P. Hartwell; Wilford I. Summers: American Electricians' Handbook, Sixteenth Edition. UNDERFLOOR-RACEWAY WIRING, Chapter (McGraw-Hill Professional, 2013), AccessEngineering Export