Phew, you need a welder then. That would be just about right. Then a nice fat set of diodes to get DC, assuming you want DC.
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HOW high ? What voltage?
up to 100a ,max 40v
A MOT saves all the time.(a life saver if you know how to mod it) line transmission before transformer getting few thousands of volts a 20-100A(not tried) Computer power supply(helped) Car batteries(helped a lot) charged capacitor bank which discharges huge amout of current in a specific time depending on capacitance(helped a lot in coil guns and other electro mag projects) generator. it you who will decide on how much power you will need
Diesel gen-set?http://www.cumminspower.com/www/common/templatehtml/technicaldocument/SpecSheets/Diesel/na/d-3337.pdf L
EbayComputer PSULarge battery"Pole pig"Power transmission line tap
Are you looking for a computer power supply? You can get a hefty one of those from any of the online computer parts suppliers.