How big is the sin in this connection ?

Thread Starter

Externet

Joined Nov 29, 2005
2,220
Hi. Found a household wiring of a four AWG 12 conductor cable this way:

Breaker panel: Black to one phase1 breaker. Red to another phase2 breaker. White to neutral bar N; Green to same bar as ground G.

Cable goes to two outlet 4x4 metal junction boxes JBA, JBB each with one 120VAC outlet.


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crutschow

Joined Mar 14, 2008
34,452
Remove the sin, my son, and sin no more. ;)

Green is only for the safety ground,
It should never carry current under normal conditions.

You need to add another wire for the neutral on the bottom outlet, or run the same hot and neutral wires to both outlets in parallel.

Long live the deciBel!
 

AnalogKid

Joined Aug 1, 2013
11,045
I'm not sure how big a sin it is to have a Line connection straight out of a breaker box be red rather than black, but that green wire connection is a big no-no.

ak
 

nsaspook

Joined Aug 27, 2009
13,279
The red wire can be a second L2 “black” wire for a proper split-phase receptacle connection. The red wire should not be used as a second L1 with the single neutral because it could be overloaded unless both L1 feed breakers/fuses are derated to the max capacity of the single return neutral wire.
 

Thread Starter

Externet

Joined Nov 29, 2005
2,220
You need to add another wire for the neutral on the bottom outlet, or run the same hot and neutral wires to both outlets in parallel.
Thanks, saints ! ;) The sin will be removed...
Can a separate single green wire be added lengthwise the 4 multiconductor towards both metal boxes as proper grounds ?
Can the red wire be painted black, the green wire painted white all ending as a black and a white to each junction box outlets, plus the new added single green to both metal boxes and ground outlet connections ?

Edited... Can an added green wire wire be used as a ground brought from a nearby properly wired junction box ? (Instead of bringing the new green wire from the breaker panel ground)
 
Last edited:

nsaspook

Joined Aug 27, 2009
13,279
Thanks, saints ! ;) The sin will be removed...
Can a separate single green wire be added lenghtwise the 4 multiconductor towards both metal boxes as proper grounds ?
Can the red wire be painted black, the green wire painted white all ending as a black and a white to each junction box outlet, plus the new added green to both metal boxes and ground outlet connections ?
This is from memory so recheck it.

Yes, you can run a seperate ground wire outside a conduit or in the wall using a code approved cable or wire but it has to be directly connected to the ground neutral bond (bar) or a designated ground like a ufer ground in a building.
If I remember correctly, Per US code, the green and white wire MUST be used as designed and not remarked. There are really no other wire color code requirements for other color wires.
 
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