Answered: Rigid metal conduit that is directly…

Rigid metal conduit that is directly buried outdoors must’ve at least ____of cover. a. 6 in. b. 12in. c. 18 in. d. 24 in.

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter4: Conductor Sizes And Types, Wiring Methods, Wire Connections, Voltage Drop, And Neutral Conductor Sizing For Services

Section: Chapter Questions

Problem 24R: Is it permitted to use flexible metal conduit over 6 ft (1.8 m) in length as a grounding means?...

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Concept explainers

Photoconductive Cell

Photoconductive cells are light-sensitive resistors in which resistance is inversely proportionated to light intensity when illuminated. These devices consist of a thin single-crystal or polycrystalline film of composite semiconductor materials. Cadmium sulfide (CdS) is used to make the most commercially available photoconductive particles which are sensitive to light in the visible spectrum. Other less commonly used substances respond to infrared light, but not to the visible spectrum. Such substances are lead sulfide (PbS), lead selenide (PbSe), and lead telluride (PbTe), and so on.

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Rigid metal conduit that is directly buried outdoors must’ve at least ____of cover.

a. 6 in. b. 12in. c. 18 in. d. 24 in.

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