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

Topic Options
Rate This Topic
#85544 - 07/13/03 04:50 PM Is This Receptacle Wired Correctly?
ThinkGood Offline
Member
Registered: 08/07/02
Posts: 1081
Loc: Milwaukee, WI
Here is a 20A, 250V receptacle (6-20R):


In my house, there is one that was wired using "BX" 10-3. (It's either type AC or type MC, black/red/white, no separate ground conductor.) At the device, the black and red connect to the two hot terminals, respectively. The white connects to the ground terminal.

At the panel, the black and red connect to two 20A breakers, with the common trip (is that the term?) so if one trips, the other does as well. The white is connected to the neutral bus bar.

Do you see any problem with this?
Top
2017 / 2014 NEC & Related Books and Study Guides
#85545 - 07/13/03 05:28 PM Re: Is This Receptacle Wired Correctly?
caselec Offline
Member
Registered: 04/14/02
Posts: 558
Loc: San Jose, CA
If the panel this receptacle is being fed from is your main service panel I don't see much of a problem other than the wire should be green and there should also be a pigtail to the box. If the panel is a sub panel then there is a problem. By connecting the equipment ground of the receptacle to the neutral buss in the sub panel you have created a parallel neutral path for the sub panel path back to the service panel using the armor of the BX cable. The neutral wire should be disconnected from the receptacle and capped off then a jumper installed from the metal box to the receptacle.

Curt
_________________________
Curt Swartz
Top
#85546 - 07/13/03 07:24 PM Re: Is This Receptacle Wired Correctly?
ThinkGood Offline
Member
Registered: 08/07/02
Posts: 1081
Loc: Milwaukee, WI
Curt:

The panel is the main panel. I was thinking along the same lines, that perhaps there is a risk of parallel paths.

If it's not an issue (the neutral and ground bars are bonded inside the panel) then that's great.

Thanks.
Top
#85547 - 07/14/03 04:40 PM Re: Is This Receptacle Wired Correctly?
wa2ise Offline
Member
Registered: 11/29/02
Posts: 782
Loc: Oradell NJ USA
If the white wire is reidentified as green at both ends (socket and panel) and in the panel it is connected to the equipment ground (that the right term for the green wire and metal case of the panel?) that the bare grounds from
romex runs connect to, that should be fine, yes?
Top
#85548 - 07/15/03 08:19 PM Re: Is This Receptacle Wired Correctly?
John Steinke Offline
Member
Registered: 04/03/01
Posts: 518
Loc: Reno,Nv., USA
I recently encountered this issue with a 220v (2-pole) GFI breaker. Guess what? The wire that I always thought was a neutral turned out to be a ground instead- the GFI set me right!
Top

Member Spotlight
Member Since: 11/17/00
Posts: 2232
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
0 registered (), 59 Guests and 9 Spiders online.
Key: Admin, Global Mod, Mod
 
New in the Gallery:
SE cable question
 
Top Posters (30 Days)
Admin 47
HotLine1 43
gfretwell 19
Ruben Rocha 12
Trumpy 9
 
Newest Members
Freecrowder, clee512, Jdscott2005, FAIZAN, Regitest2

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