Exam 5: Raceways and Conductors

Flexible metal conduit (FMC) is a raceway of circular cross section made of ____.

Grounding conductors are required for circuits over ____ amperes.

NEC identifies ____ types of rigid PVC conduit.

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

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

Underfloor raceway dead ends must be ____.

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

All cut ends of IMC and RMC must be ____.

Electric metal tubing (EMT) provides protection from ____.

The minimum approved electrical trade size for EMT is ____ inches.

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

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

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

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

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

A header is a transverse raceway ____.

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

Article 100 defines raceway as a(n) ____designed expressly for holding wires, cables, or busbars.

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

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