CELLULAR-CONCRETE-FLOOR-RACEWAY WIRING


Please sign in to view the rest of this entry.

CELLULAR-CONCRETE-FLOOR-RACEWAY WIRING
CELLULAR-CONCRETE-FLOOR-RACEWAY WIRING294. Cellular-concrete-floor raceways provide a complete underfloor electrical distribution system. For this system the floor is constructed of precast reinforced-concrete members (Fig. 9.218). These precast members are provided with hollow voids which form smooth, round cells. The cells form raceways for the electrical wires. Connections to the cells from a distribution center are made by means of metal header ducts which are run horizontally across the precast slabs and embedded in the concrete fill over the slabs. Connection from these headers to the cells is made through handhole metal junction boxes. An outlet can be located at any…
Citation
Terrell Croft; Frederic P. Hartwell; Wilford I. Summers: American Electricians' Handbook, Sixteenth Edition. CELLULAR-CONCRETE-FLOOR-RACEWAY WIRING, Chapter (McGraw-Hill Professional, 2013), AccessEngineering Export