Standard wire nuts come in five main sizes, which are usually color-coded ... which are used to join copper grounding wires, ...

Soft copper wire : 20 gauge ( wire diameter 0.8mm ) : 9cm ( 3.5 inch) for each wave link 3cm ( 1.2 inch) for each arc 4cm ( 1.5 inch) for the clasp This video was remade from the video: Knot wire ...