Mixing Types Cables in conduit or tray.

[ksavoie]

Is it OK to mix 300v Cable and 600v Cable in the same condit or tray if all cables will be used at a voltage of 24v?

 

[JMatt]

NFPA 70-2005
392.6 (E) Multiconductor Cables Rated 600 Volts or Less.
"Multiconductor cables rated 600 volts or less shall be permitted to be installed in the same cable tray."

I think you're covered.

 

[dpc]

It's not an NEC violation.

 

[ksavoie]

JMatt,

Thanks for the info. on the multiconductor cable and Tray. Does anyone else know where I can find the same infomation for conduit? I was told I can't mix 300v and 600v cables in the same conduit even though the voltage is 24v for all cables.

 

[dpc]

It's the same for conduit, enclosures, or any raceway. NEC Article 300.3(C)(1).

Over 600 V it's a different story.