Quote:
Originally Posted by harlequin2
Don't worry about it! The current flows down the busbars at about .4 nanoseconds per metre! And that means there is no measurable difference in which device gets what first. The turn-on and turn off times are orders of magnitude greater and completely swamp any variations in busbar length.
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It's not the propagation delay (which is considerably longer than your estimate, but still inconsequential). It's the resistance, and a little bit the inductive loop area. At a few hundred amps, even the trivial additional resistance for the extra few inches of bus bar makes a big difference in how balanced the current is.