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Joined: Feb 2004
Posts: 494
M
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forgot to ask, is ent allowed in a clinic?

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Joined: Apr 2002
Posts: 558
C
Member
Not in the areas that require redundant grounding. Also remember that FMC over 6’ is not permitted. You really only have 2 options, a metal raceway (RMC, IMC or EMT) with separate insulated ground wire or HCF AC cable.


Curt Swartz
Joined: Feb 2004
Posts: 494
M
Member
thanks, you can always rely on good information from the members of this site..recently was hired to help a contractor out of trouble with a couple jobs..i thought ent and bx looked funny for some reason and ENT WAS longer than 6 feet to boot!

80% of 6000 sq foot of building was ready for rough-in..told boss that there was problem...he decided to fire me...i decided to call the state and ask them who was right..

boss should have taken two and thought it through..

inspectors shut em down for using bx and ent

not a license on the job even though required..

i resigned way before he decided to fire me for questioning his knowledge!

i wonder what he will do now? i am surprised he did not do it in romex!

the cost of that job just doubled...

sad situation these days..



[This message has been edited by mustangelectric (edited 08-26-2004).]

Joined: Feb 2003
Posts: 198
Z
Member
You guys should read Article 362....ENT


Shoot first, apologize later.....maybe
Joined: Apr 2002
Posts: 558
C
Member
Zapped,
I could read Article 362 a thousand times but ENT will not meet the redundant grounding requirements of Article 517.


[This message has been edited by caselec (edited 08-31-2004).]


Curt Swartz
Joined: Jul 2004
Posts: 9,950
Likes: 34
G
Member
You can't concentrate too much on "redundant ground". That could just be two green wires.
The fact is 517 says one of these grounds will be the "metal" wiring method itself.

517.13 Grounding of Receptacles and Fixed Electric Equipment in Patient Care Areas.
Wiring in patient care areas shall comply with 517.13(A) and (B).
(A) Wiring Methods. All branch circuits serving patient care areas shall be provided with a ground path for fault current by installation in a metal raceway system, or a cable armor or sheath assembly. The metal raceway system, or cable armor, or sheath assembly, shall itself qualify as an equipment grounding return path in accordance with 250.118. Type AC, Type MC, Type MI cables shall have an outer metal armor or sheath that is identified as an acceptable grounding return path.
(B) Insulated Equipment Grounding Conductor...

Sort of eliminates any plastic wiring method huh?


Greg Fretwell
Joined: Jun 2004
Posts: 220
T
Member
Is it allowed in non patient areas? 517-10.

Joined: May 2002
Posts: 1,716
R
Member
Trekkie, yes it is allowed in "Non Patient Care Areas" specifically per 517-12, which would also allow NM or any other wiring method in chapter 3.

Out of curiosity, is your area still under an NEC cycle pre 2002?

Roger

Joined: Feb 2003
Posts: 198
Z
Member
Guys, I was meaning non patient care areas too mustang's post.
I have pulled my share of HCF/M/C cable.


Shoot first, apologize later.....maybe
Joined: Jun 2004
Posts: 220
T
Member
Roger, we are on 2002 NEC up here in the sticks

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