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#78650 - 10/11/01 05:06 AM Effective Cable Separation
WARREN1 Offline

Registered: 05/09/01
Posts: 184
Loc: Greenville, SC, USA
Mixing of cables over 600 volts and cables under 600 volts in manholes is permitted by Art. 300-3(2)(e) if they are "effectively separated". "Effectively separated" is not defined. So far, I have not seen anything in IEEE or other publication to give definition. Some say that Art. 725-54 implies the Code Panel requires cable separation in accordance with the Exceptions.
Some thoughts from this forum??

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#78651 - 10/12/01 05:14 PM Re: Effective Cable Separation
sparky Offline

Registered: 10/18/00
Posts: 5545
I keep seeing that 2" rule pop up. The exceptions are certainly lengthly on this one..

#78652 - 10/22/01 08:51 PM Re: Effective Cable Separation
Tom Baker Offline

Registered: 10/09/01
Posts: 31
Loc: Bremerton WA
Could you sleeve the under 600 v in a NM flex conduit?

And to effectivly separate I think they would have to be secured in place


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