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Wayne Whitney

On 2009-08-27, wrote:

On Wed, 26 Aug 2009 18:24:58 +0000 (UTC), Wayne Whitney

It would appear that cutting back the wires after soldering would
violate NEC 110.14(B): "Soldered splices shall first be spliced or
joined so as to be mechanically and electrically secure without solder
and then be soldered."

Where does cutting back a well twisted and soldered joint violate
that??

You are supposed to solder last. If you cut it after you solder it,
you no longer guarantee that it is mechanically secure without the
solder.

Also, NEC 250.148(E) prohibits relying on solder for the grounding
conductor (EGC): "Connections depending solely on solder shall not be
used."

Or anything recommended violate that???
The ground connector, twisted and soldered with no tape meets the
requirement (assuming solid wires)

I disagree. I would say that connection "depends solely on solder".
Clearly it depends on the solder to be an acceptable splice, and since
the solder is only added element to make the splice, it depends solely
on the solder.

Anyway, that issue is mute, because the 2008 NEC prohibits soldered
splices for the EGC by omitting them from the list of acceptacle
connection methods in 250.8(A).

So go ahead and solder the grounded and ungrounded conductors, but for
the grounding conductor, you would need to do something else, like
crimping before soldering.

Cheers, Wayne