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Social ScienceWhen installing raceways underground in rigid nonmetallic conduit and other approved raceways, there must be a minimum of ___ of cover.a. 6in b. 12in. c. 18in. d. 22in.
When installing raceways underground in rigid nonmetallic conduit and other approved raceways, there must be a minimum of ___ of cover.
a. 6in b. 12in. c. 18in. d. 22in.
Expert Answer
To find the cover distance in installing underground raceways in rigid non-metallic conduit.
Rigid nonmetallic conduit is an unthreaded tubing with smooth wall. It is thin walled tube with high malleable property ( can be bend by hand easily). It is used to provide physical support to the electric cables and equipment which goes pass t...
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Electrical Engineering
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