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362.12 Uses Not Permitted. ENT shall not be used in the

following:

(1) In hazardous (classified) locations, except as permitted by

504.20 and 505.15(A)(1)

(2)

For the support of luminaires (fixtures) and other equipment

(3) Where subject to ambient temperatures in excess of 50°C

(122°F) unless listed otherwise

(4)

For conductors whose insulation temperature limitations

would exceed those for which the tubing is listed

(5) For direct earth burial

(6) Where the voltage is over 600 volts

(7) In exposed locations, except as permitted by 362.10(1),

362.10(5), and 362.10(7)

(8) In theaters and similar locations, except as provided in

articles 518 and 520

(9) Where exposed to the direct rays of the sun, unless

identified as sunlight resistant

(10) Where subject to physical damage

362.20 Size.

(A) Minimum. ENT smaller than metric designator 16

(trade size

/2) shall not be used

(B) Maximum. ENT larger than metric designator 53

(trade size 2) shall not be used.

FPN: See 300.1(C) for the metric designators and trade sizes.

These are for identification purposes only and do not relate

to actual dimensions.

362.22 Number of Conductors. The number of conduc-

tors shall not exceed that permitted by the percentage fill in

Table 1, Chapter 9.

Cables shall be permitted to be installed where such use is

permitted by the respective cable articles. The number of

cables shall not exceed the allowable percentage fill specified

in Table 1, Chapter 9.

362.24 Bends – How Made. Bends shall be made so that

the tubing will not be damaged and that the internal diameter

of the tubing will not be effectively reduced. Bends shall be

permitted to be made manually without auxiliary equipment,

and the radius of the curve to the centerline of such bends

shall not be less than shown in Table 344.24 using the column

“Other Bends.”