Looks like I'm missing out on Bennie's escapades. Is he a homeowner DIY, or a "professional" [Linked Image] ?

I do wonder how they compensate for the temperature extremes when wiring. Obviously PVC outside is out, so no UF cable, or NM conduit. Even THHN wire's outer jacket cracks fairly easily here in the Midwest in the really cold times, so I'll bet ampacity ranges can be fudged in Antartica, just a bit. Sounds like a good place for testing superconductor wiring.