421.3

The approximate area in square inches for a 4/0 AWG THW aluminum building wire is ___.

.3267

When the calculated number of conductors, all of the same size, includes a decimal fraction, the next higher whole number shall be used if ___.

.8 and larger

Determine the MINIMUM trade size EMT required to enclose eight 6 AWG THHW copper conductors installed in a 50-ft. conduit run. Select one:

1 1/4 in.

What size Schedule 40 PVC is required for eight 6 AWG XHHW conductors?

1 1/4"

A 1 1/2" RMC nipple with three conductors can be filled to an area of ___ square inches.

1.243

Except by special permission, no conductor larger than ___ shall be installed in cellular metal floor raceways.

1/0 AWG

Five 1 AWG and five 3 AWG copper THW conductors are to be installed in a 20-foot length of IMC raceway. What is the minimum allowable trade size IMC required to contain these ten conductors?

2 1/2 in.

When conduit nipples having a maximum length not to exceed ___ inches are installed between boxes and similar enclosures, the nipples shall be permitted to be filled to 60% of their cross-sectional area.

24

When calculating the conductor fill for strut-type channel raceway with external joiners, the raceway shall be permitted to be filled to ___ percent of the cross-sectional area.

40

Equipment grounding conductors, when installed, ___ be included when calculating conduit fill.

shall