Class 1, Class 2, And Class 3 Remote-Control, Signaling, And Power-Limited Circuits
725.3 Locations of Other Articles
The following requirement was added:
(A) Number and Size of Conductors in Raceway. The number and size of conductors in a raceway must be in accordance with the limitations listed in 300.17. Intent: The new rule requires that the raceway fill limitations of 300.17 apply to Class 1, Class 2 and Class 3 conductors. When installing control and signaling cables in a raceway you must limit the number in accordance with the percent fill limitations of Chapter 9, Table 1.
The proposal that was submitted for this change was not intended to required Class 2 or Class 3 cables to comply with the raceway fill limitations [ROP 16-36], but the language has that effect. But this is not important, because there is no physical way to install these cables anywhere near the 40% fill allowed in Chapter 9, Table 1 without destroying them.
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