Not sure if I am supposed to be offended or not

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Whatever we put in needs to last forever, just like everything else does, never mind they abuse the hell out of it, leave doors open, access panels off, etc.

They also want cheap and fast majority of the time.
Listed or not, I have better faith in crimped on connections and shrink tube if going on buried aluminum conductors. I have never seen shrink tube fail, if properly sized and applied, seen other insulating methods fail on buried conductors, seen conductors fail right next to shrink tube insulated repairs.