I have no problems testing ESC's with a amp meter that has 48" long leads. That means the + side of the battery has a 100" long lead in it & the - side has a 24" long lead in it.
All new equipment is ALWAYS checked out with this setup to be sure it works OK at WOT.

NO problems yet. 30 years of brushed & brushless.............I NEVER run anything over the maximum VOLTS or AMPS !!!!!!!! Maybe that is really why nothing blows up.

I have run 2 sets 48" motor leads on a 80" A-10 with no problems. NO exceeding the Maxes.

Rich