12s and FOC - is it safe or not?

been running 12S4P FOC mode on VESCX for couple month now, no problem at all. Motors are 170kv 6374s

I see a lot of guys with a mtb built, battery in the middle of the deck and the vescs on the tail. The wires surely about 40-50cm there. Would like to know if there any complications appear?

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