[defrost]

My first thought also .. possibly pulled a breaker rendering cable inert, or perhaps rigged a remote cutting tool - drop saw poised to cut on a long extension cord ready to be turn on ... (problematic).

I'm leaning toward killed the current first somehow, but very location detail dependant.

[cucumber3732842]

You can buy high voltage gear online cheap. Just this one job would pay for the complete setup if you're buying cheap brands.

[Halian]

I bet it's Vevor. They make everything.