I think this might be the case with Eurostar because it can have only 4 shoes for the whole trainset while Oka has whole 16 current collectors, two for each 0.68 MW KATP-2 (КАТП-2) traction drive set, just a small current for each shoe to handle.>The killer on 3rd rail is resistance.
Although I doubt resistance is much of a problem for a very thick steel rail, while steel is less conductive than copper the 3rd rail has dozens times larger cross section. The loss of voltage might be due to current leakage into the ground which seem to me as a perfectly usual thing for the 3rd rail, especially in wet conditions.>>4872
Electric traction "outpowered" the diesel traction long time ago, dude. But damn, have you even read what was under that spoiler in >>4840
?spoiler: it's not 6 GW actually