ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

Topic Options
Rate This Topic
#76618 - 02/28/01 01:59 PM Grounding Conductor
jsb55 Offline
Junior Member
Registered: 02/28/01
Posts: 1
Loc: Roanoke, Virginia, USA
Section 250-91(b) (1996 NEC) allows the use of emt as the grounding conductor of a circuit. My question concerns whether the common type emt fittings will provide continuity or if some type of bonding connector should be used? What is normal in the industry?

thanks
Top
2017 / 2014 NEC & Related Books and Study Guides
#76619 - 02/28/01 02:40 PM Re: Grounding Conductor
Tom Offline
Member
Registered: 01/01/01
Posts: 1044
Loc: Shinnston, WV USA
EMT fittings will safely carry ground fault currents At least the steel ones will, some of the zinc die cast don't perform as well, mainly because the locknuts sometimes won't penetrate the paint on some boxes or fixtures.

Many electricians around here also install an equipment grounding conductor inside the conduit. We've all seen fittings that have loosened or have had the conduit pulled out & when that happens, there is no ground downstream from the break.

I personally pull in a seperate equipment ground in any conduit likely to get abused. I don't bother to do this with conduits that are 20 feet in the air, but once you drop down to 10 feet or so they can be easily damaged.
_________________________
Few things are harder to put up with than the annoyance of a good example.
Top

Member Spotlight
Member Since: 04/03/02
Posts: 6776
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
0 registered (), 50 Guests and 8 Spiders online.
Key: Admin, Global Mod, Mod
 
New in the Gallery:
SE cable question
 
Top Posters (30 Days)
Admin 51
HotLine1 43
gfretwell 17
Trumpy 16
Ruben Rocha 13
 
Newest Members
clee512, Jdscott2005, FAIZAN, Regitest2, sureshazhagai

ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals