As I am currently in a war zone, I don't have many options for cabling
A really interesting resource for challenging times is the Simplifier site.  It's somewhat Primitive Technology but gets into such things as how to make a crude solar panel and more.<p>I list it specifically because it does cover creating insulated wire.<p><a href="https://simplifier.neocities.org/" rel="nofollow">https://simplifier.neocities.org/</a>