Article 310. Conductors for general wiring

The unbalanced load

A neutral conductor that carries only ______ current shall not be required to be counted as a current carrying conductor.

Three

Adjustment factors shall not apply to type AC or MC cable that have not more than ___ , and are #22 AWG.

Sunlight resistant

All cables installed on a roof (in/out of conduit ) must be identified as ______.

24 inches

Conductor derating factors shall not apply in conduit nipples having a length not exceeding ____ .

necessary

Conductors for TVSS shall not be longer than ____ .

25°F

Conduits installed on rooftops 1 to3 feet from the surface of the roof shall have ____ added to the ambient temperature.

30°F

Conduits installed on rooftops 3 1/2 to 12 inches from the surface of the roof shall have ____ added to the ambient temperature

40°F

Conduits installed on rooftops in direct sunlight shall have ____ added to the ambient temperature when it is a half inch to 3 1/2 inches from rooftop.

changes

If the ambient temperature for conductors is above 86°F and below 78°F the conductor ampacity _____ .

#1/0 AWG

In general, The minimum size conductor permitted for use in parallel installations is _____

40 inches

Other markings besides size (AWG) shall be repeated at intervals not exceeding ____

24 inches

The AWG size marking shall be repeated at intervals not exceeding ___ on wire.

Heat resistant 167 degress

The H in THW wiring stands for ____

High Heat resistant !94 degress

The HH in THHN wiring stands for ___

Nylon coated for resistance to oil and gasoline

The N in THHN wiring stands for ____

Thermoplatic

The T in THHN wire stands for___

Wet

The W in TWN wiring stands for___

Flame retardant insulation

The X in XHHW wiring stands for ____

# 10 AWG

The largest solid conductor allowed in a raceway is sized _____.

#14 AWG

The minimum size conductor permitted for branch circuits on the 600 V is ____

86°F

The standard temperature upon which conductors are rated on the ambient temperature is _____

70%

When Seven to nine current carrying conductors are running the same conduit the impasse city of each conductor is adjusted _____ .

shall not

When determining the number of current carrying conductors ,a grounding or bonding conductor _____ be counted when applying adjustment factors.

#8 AWG

When installed in raceways ,conductors ____and larger shall be stranded

60°F

Where conductors are installed in conduits exposed to direct sunlight on rooftops, the ambient temperature shall be increased by _____ when conduits are 1/2 inch from rooftop.

80%

Where four to six current carrying conductors are run in the same conduit ,the ampacity of each conductor shall be adjusted by a factor of ____