Stranded wire for vibration of equipment

[Light Sabre]

I am pretty sure, but cannot recall or find the article about having to use stranded wire for equipment that moves or vibrates… any input is much appreciated… GO!

 

[infinity]

There is 410.56(E) but that for light fixtures on chain.

 

[suemarkp]

610.11(C) for cranes, 675.4(A) for moving irrigation machines, 695.14(D) for engine driven fire pumps

 

[Besoeker3]

FWIW we always used stranded for this kind of power electronics:

https://imgur.com/o54m4If