×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Mixing Types Cables in conduit or tray.

Mixing Types Cables in conduit or tray.

Mixing Types Cables in conduit or tray.

(OP)
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?

RE: Mixing Types Cables in conduit or tray.

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.

RE: Mixing Types Cables in conduit or tray.

It's not an NEC violation.

RE: Mixing Types Cables in conduit or tray.

(OP)
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.

RE: Mixing Types Cables in conduit or tray.

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

Over 600 V it's a different story.    

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources