Quote Originally Posted by Dave_stoke View Post
It's 800w the spindle. So I need initially a shielded cable capable of 1500w

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No, it's 800w @ 220v over 3 phases so, roughly 270 watts per phase or about 1.25 amps. Maybe you could get away with repurposing some sort of signal cable... but I wouldn't personally. Get a proper flexible copper braided cable and do it properly.