300.3(C) Conductors of Different Systems.
(1) 1000 Volts, Nominal, or Less. Conductors of ac and dc
circuits, rated 1000 volts, nominal, or less, shall be permit-
ted to occupy the same equipment wiring enclosure, cable,
or raceway. All conductors shall have an insulation rating
equal to at least the maximum circuit voltage applied to any
conductor within the enclosure, cable, or raceway.
Secondary wiring to electric-discharge lamps of 1000
volts or less, if insulated for the secondary voltage involved, shall be permitted to occupy the same luminaire,
sign, or outline lighting enclosure as the branch-circuit conductors.
Informational Note No. 1: See 725.136(A) for Class 2 and
Class 3 circuit conductors.
Informational Note No. 2: See 690.4(B) for photovoltaic
source and output circuits.
I know it's in the NEC somewhere but I can't seem to find it.
Isn't it a violation to run low voltage (say 300V) Belden cable in the same raceway as 600VAC rated wire?
You are seriously misunderstanding what Article 725 circuit classifications are. This has nothing to do with hazardous location Classes (which by the way are expressed as roman numerals).Hey Guys every one talking about Art 725 which prohibits to use same race way. But please don’t mix and match hazards class 2 and class 3 wiring with general wiring or unclassified wiring. Art 725 just applied on Hazards locations. Think about are we using same wiring methods what we are using in general wiring or unclassified locations? No. Then why we making confusion with class 2 or class 3 hazards location wiring with unclassified wiring methods.
You are seriously misunderstanding what Article 725 circuit classifications are. This has nothing to do with hazardous location Classes (which by the way are expressed as roman numerals).
We having a lot misunderstanding of this article.
Yes, you do.
-Hal
could you explain how and why Am I wrong?
Classes 1, 2, and 3 in chapter 7 do not have the same meaning as in classes I, II, and III in chapter 5 hazardous location classifications.could you explain how and why I am wrong?