Exam 5: Raceways and Conductors

A multiconductor cable, optical fiber cable, or flexible cords of two or more conductors is treated as ____ for percentage conduit fill area calculations.

Contact of dissimilar metals (except for the combination of aluminum and steel) should be avoided wherever possible to lessen the potential for ____.

Wireways are ____ housing and protecting electric wires (and cables).

Raceways installed within drop ceilings must ____.

Rigid metal conduit (RMC) is a threadable raceway of ____ designed for the physical protection and routing of conductors and cables.

Grounding conductors are required for circuits over ____ amperes.

Half-round and flat-top raceways not over 4 inches in width must be covered by ____ or more of concrete (or wood).

Splices and taps are permitted within surface metal raceway having a removable cover that ____.

All cut ends of IMC and RMC must be ____.

Liquidtight flexible metal conduit (LFMC) is a raceway of circular cross section having a(n) ____ over an inner flexible metal core.

PVC bends must be made so that the conduit remains undamaged and the internal diameter of the conduit is ____.

A group of conductors that fit into one conduit may not fit into another type because the ____ of different types of conduit vary.

NEC identifies ____ types of rigid PVC conduit.

The definition for intermediate metal conduit (IMC) and rigid metal conduit (RMC) is ____.

Raceway fill calculations are a prerequisite in ____ needed for particular circuits.

The equivalent of ____ is the maximum allowed between pull points.

Bends must be made so that the conduit or tubing remains undamaged with its internal diameter ____.

Electric metal tubing (EMT) provides protection from ____.

Surface nonmetallic raceways and their fittings must be designed so that sections can be mechanically coupled together and installed without subjecting the wires to ____.

Underfloor raceway dead ends must be ____.