National Electrical Code. (NEC) Article 342, 344, 348, 350, 352, 356. Types of Conduits.

Liquid-tight flexible metal conduit shall be securely fastened by a means approved by the authority having jurisdiction within _____ of termination.

1 ft.

Where flexibility is not required after installation, liquid-tight flexible metal conduit shall be permitted to be used as an equipment grounding conductor when installed in accordance with _____.

250.118(6).

For flexible metal conduit, if flexibility is necessary after installation, unsecured lengths from the last point the raceway is securely fastened shall not exceed _____.

3 ft for trade sizes 1/2 through 1 1/4. 4 ft for trade sizes 1 1/2 through 2. 5 ft for trade sizes 2 1/2 and larger.

Where Type LFNC conduit is installed in lengths exceeding _____ ft, the conduit shall be securely fastened at intervals not exceeding 3 ft and within 12 in. on each side of every outlet box, junction box, cabinet, or fitting.

6ft.

The minimum radius of a field bend on trade size 1 1/4 RMC is _____ in.

8 in.

The number of conductors permitted in LFNC shall not exceed the percentage fill specified in _____.

Chapter 9, Table 1.

_____ is a raceway of circular cross section made of a helically wound, formed, interlocked metal strip.

FMC.

_____ is a raceway of circular cross section having an outer liquid-tight, nonmetallic, sunlight-resistant jacket over an inner flexible metal core.

LFMC.

A rigid nonmetallic raceway of circular cross section, with integral or associated couplings, connectors, and fittings for the installation of electrical conductors and cables describes _____.

PVC.

Article 352 covers the use, installation, and construction specifications for _____ and associated fittings.

PVC.

PVC conduit shall be permitted for exposed work where subject to physical damage if identified for such use.

True.

The cut ends of PVC conduit shall be trimmed to remove the burrs and rough edges.

True.

The use of LFMC shall be permitted for direct burial where listed and marked for the purpose.

True.

Type IMC conduit shall be permitted to be installed where subject to severe physical damage.

True.

Where a PVC conduit enters a box, fitting, or other enclosure, a bushing or adapter shall be provided to protect the wire from abrasion unless the box, fitting, or enclosure design provides equivalent protection.

True.

Where IMC enters a box, fitting, or other enclosure, _____ shall be provided to protect the wire from abrasion unless the design of the box, fitting, or enclosure affords equivalent protection.

a bushing.

Where RMC enters a box, fitting, or other enclosure, _____ shall be provided to protect the wire from abrasion, unless the design of the box, fitting, or enclosure affords equivalent protection.

a bushing.

IMC, elbows, couplings, and fittings shall be permitted to be installed in concrete, in direct contact with the earth, or in areas subject to severe corrosive influences where protected by corrosion protection _____ for the condition.

approved.

PVC conduit is permitted in locations subject to severe corrosive influences and where subject to chemicals for which the materials are specifically _____.

approved.

Extreme cold can cause some types of nonmetallic conduits to become _____ and therefore more susceptible to damage from physical contact.

brittle.

IMC shall be secured _____.

by fastening within 3 ft of each outlet box, junction box, device box, cabinet, conduit body, or other conduit termination. within 5 ft of a box or termination fitting when structural members do not readily permit the raceway to be secured within 3 ft of the termination. except when the IMC is within 3 ft of the service head for an above-the-roof termination of a mast.

Threadless couplings and connectors used with RMC buried in masonry or concrete shall be the _____ type.

concrete tight.

Galvanized steel, stainless steel, and red brass RMC elbows, couplings, and fittings shall be permitted to be installed in concrete, in direct contact with the earth, or in areas subject to severe corrosive influences when protected by _____ approved for the condition.

corrosion protection.

When LFNC is used, and equipment grounding is required, a separate _____ shall be installed in the conduit.

equipment grounding conductor.

Article 348 covers the use, installation, and construction specifications for flexible metal conduit (FMC) and associated _____.

fittings.

Cable ties used to securely fasten flexible metal conduit shall be _____ for securement and support.

listed and identified.

Bends in LFNC shall be made so that the conduit will not be damaged and the internal diameter of the conduit will not be effectively reduced. Bends can be made _____.

manually without auxiliary equipment.

Article 344 covers the use, installation, and construction specifications for _____ conduit and associated fittings.

rigid metal.

Bends in FMC _____ between pull points.

shall not exceed 360 degrees.

Threadless couplings and connectors used with intermediate metal conduit shall be made _____.

tight.