I'm afraid that I am reading too much into this exception. Is it okay to oldwork HCF cable down to an emergency receptacle or does it need to be in nonflexible metal conduit/Type MI cable? Using HCF cable is obviously more practical but I wouldn't say it was necessary (especialy since I'm not paying for it). I'm not sure how rigid the rules are pertaining to mechanical protection of these branch conductors.
517.30(C)(3) Exception No. 5
- Thread starter vinchenzo
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- New Jersey
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- Journeyman Electrician
Re: 517.30(C)(3) Exception No. 5
HCFC is basically a type AC cable with an insulated grounding conductor in it. It provides redundant grounding since it has an outer sheath that is also a listed grounding conductor.
[ May 10, 2005, 09:06 PM: Message edited by: infinity ]
HCFC is basically a type AC cable with an insulated grounding conductor in it. It provides redundant grounding since it has an outer sheath that is also a listed grounding conductor.
[ May 10, 2005, 09:06 PM: Message edited by: infinity ]
john m. caloggero
Senior Member
Re: 517.30(C)(3) Exception No. 5
Vinchenzo: The branch circuit wiring for the "Essential Electrical System" were required to be in in nonflexible metal raceways such as rigid metal conduit, or electrical metallic tubing. However, in the 2005 NEC, 517.30(c)(3)(5), permission is granted to allow flexible metal raceways and cable to be installed in existing installations where the existing walls or ceilings remain intact. You better check to find out which edition of the NEC is in force in your jurisdiction.
Vinchenzo: The branch circuit wiring for the "Essential Electrical System" were required to be in in nonflexible metal raceways such as rigid metal conduit, or electrical metallic tubing. However, in the 2005 NEC, 517.30(c)(3)(5), permission is granted to allow flexible metal raceways and cable to be installed in existing installations where the existing walls or ceilings remain intact. You better check to find out which edition of the NEC is in force in your jurisdiction.
Re: 517.30(C)(3) Exception No. 5
John,
You raised a good question. We only just adopted the 2002 NEC last fall. I here we are going to skip the 2005 NEC and with any luck adopt the 2008 NEC when it comes out. So, back to my original question - do I need to use non-flexible metallic conduit (based on the 2002 NEC)?
John,
You raised a good question. We only just adopted the 2002 NEC last fall. I here we are going to skip the 2005 NEC and with any luck adopt the 2008 NEC when it comes out. So, back to my original question - do I need to use non-flexible metallic conduit (based on the 2002 NEC)?
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