2 conductor NM type cable w/o ground wire.

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Joe Cool

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I have another question concerning the same project.

The old NM type cable with only 2 conductors and no ground...

If receptacles are replaced, they must "not" have a ground terminal
or they must be replaced with a GFCI or GFCI protected.

Is that still correct according to NEC?

Also have another question... A friend of my wife's had the old 2 conductor type cable
and no grounded receptacles. The electrician ran pieces of Green 12AWG THHN out
of the panel and stapled them along the joists in the basement. Then fished them into
the receptacles in the wall so she could have grounded receptacles.

Is that acceptable to NEC? I've never seen that done before.

Thanks
 
406.3(D)(3) 2008 NEC

...you can install all grounding type receptacles , but the first one in ckt must be GFI, and all the other receptacles must have the stickers 'gfci protected' and 'no equipment ground'.

As for the separate green, thhn ground wire , I would say no, 406.3(D)(3) dictates how receptacles are to be replaced.
 
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Joe Cool said:
I have another question concerning the same project.

The old NM type cable with only 2 conductors and no ground...

If receptacles are replaced, they must "not" have a ground terminal
or they must be replaced with a GFCI or GFCI protected.

Is that still correct according to NEC?

Also have another question... A friend of my wife's had the old 2 conductor type cable
and no grounded receptacles. The electrician ran pieces of Green 12AWG THHN out
of the panel and stapled them along the joists in the basement. Then fished them into
the receptacles in the wall so she could have grounded receptacles.

Is that acceptable to NEC? I've never seen that done before.

Thanks
Click to expand...

(All this below is from the 2014:))

Correct on the first question-406.4 (D)(2)

As for the separate egc, 250.130 (C) makes it legal- there has been some confusion over 406.4 (D)(2) vs. 250.130 (C).

Look at it this way- 406.4(D)(2) applies when there is no egc when replacing a rec, but if you follow 250.130 (C), and you have added an egc, the receptacle now has an egc and is no longer ungrounded-meaning 406.4 (D)(2) no longer has to be met- you can then just replace the old 2 wire rec with a new 5-15 rec,( t.p. of course:))
 
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