DIYbanter - View Single Post - joining wires without a junction box within a wall

wrote:
Greetings,

What is the best (cheapest/quickest?) NEC compliant way to join two
wires within a wall that will NOT later be accessible without
disturbing the building finish?

The current method I most often see utilized in past construction is to
strip an area of insulation off of a wire without cutting it, twist
another wire around this wire with many loops and finally apply
electrical tape generously.

Thanks,
William

There's not an NEC compliant way to do it. If you want to do it safely
but not compliant, do what you said but then silver-solder the
connection and wrap with rubber splicing tape. Regular solder isn't
good enough, you'd have to either weld it (and copper is hard to weld)
or use silver solder with a high silver content (like 40%.) It would be
a real pain-in-the-ass to do, and a half-assed job when you were done. HTH

Best regards,
Bob