ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
twh 3
Recent Posts
FPE in Germany
by Texas_Ranger. 11/19/17 07:30 AM
Ceiling fan distance from outdoor hot tub
by gfretwell. 11/16/17 02:18 AM
diazed fuses
by Texas_Ranger. 11/13/17 03:02 PM
Theft deterrent alarm
by gfretwell. 11/12/17 01:39 PM
EEPROM errors on XC7Z010-2CLG225I chip
by twh. 11/07/17 05:45 PM
New in the Gallery:
Gallery Test
Popular Topics(Views)
242,579 Are you busy
178,748 Re: Forum
170,022 Need opinion
Who's Online Now
0 registered members (), 30 guests, and 6 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#188889 - 09/08/09 10:02 PM mc cables  
dilydalyer  Offline
Member
Joined: Jan 2007
Posts: 59
tennessee
In the 2005 code book,could 330.30(d)(2) be interpeted to mean that no bat-wing is required from j-box to light,light to light etc. if the whip is 6' or shorter?I was thinking at least supported 12" from box,then I took the"for the purpose of this section,type mc cable fittings shall be permitted as a means of support" into consideration.Doing a job where they want buy alot of batwings.......


2017 / 2014 NEC & Related Books and Study Guides

#188892 - 09/08/09 11:11 PM Re: mc cables [Re: dilydalyer]  
renosteinke  Offline
Cat Servant
Member
Joined: Jan 2005
Posts: 5,316
Blue Collar Country
If you're worried about batwings, you need to re-examine your priorities.

If you're using the factory whips, you do NOT get to go from fixture to fixture; the wire isn't sized for that.

Otherwise, you read correctly, the 6ft whips need no support. Indeed, it might be hard to remove the tiles if the whips are secured.

What you attach the batwings to is another issue, as it appears that you can no longer use the wires that hold the ceiling up. Considering how 'busy' ceiling space has become, hanging more support wires is sure to be fun.


#188893 - 09/08/09 11:19 PM Re: mc cables [Re: dilydalyer]  
leland  Offline
Member
Joined: Aug 2007
Posts: 853
Lowell area, Ma. USA
'Tell you what', I agree. no bat wings needed.
no mention of distance from "junction boxes".

let'r' rip if shorter than 6'.

But now.... 2' tiles,2 in between each fixture,and the fixture plate in the middle of a 2' fixture.
So now do you have to use the 90 deg. connectors?
(side by side)
End to end-- 2'- 4'- 2'- Now you need support.

Sloppy assistant..you can easily be over 6'. Ahh But who will check?


#188902 - 09/09/09 12:42 PM Re: mc cables [Re: leland]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,135
Estero,Fl,usa
I agree it is code compliant but, as a person who grew up with MC and FMC whips under computer room floors, I can say most of those connectors seem to be designed to hold armor that is secured close to the connector. After a little flexing, it is pretty easy to pull the cable loose, so be careful around those whips.


Greg Fretwell


Member Spotlight
Theelectrikid
Theelectrikid
Levittown, PA
Posts: 810
Joined: April 2004
Show All Member Profiles 
Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.016s Queries: 15 (0.003s) Memory: 0.7607 MB (Peak: 0.8950 MB) Zlib enabled. Server Time: 2017-11-19 21:39:29 UTC