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Electrical conduit

What is the safest type of conduit, with the same wall thicknesses as schedule 40 plumbing pipe?
A. Intermediate metallic conduit (IMC)
B. Rigid conduit
C. Electrical metallic tubing (EMT)
D. Flexible metal conduit (flex or greenfield)
E. Interlocked armored cable
F. Sheathed wire (NM or NMC)

AnswerB. Rigid conduit is the safest, next safest with thinner walls than plumbing pipe is A. IMC, which is generally as acceptable.

ARE 4.0 exam prep: BS

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