[Jamey80]

I finished unspooling it... I calculate that the wire was about 900m long and has a resistance of 8.4Ω/m making it SWG47/AWG44 according to google.
It did break several times in the process so the original wire's not going back on, so I guess it's a choice between rewinding with the same gauge wire or less of something more manageable. I've not decided, but SWG47 wire may drive me insane...