Your #4 cables do not dissipate heat nearly as effectively as the liquid cooling solution they're using on this test bed [1]. For this processor to continue di

Your #4 cables do not dissipate heat nearly as effectively as the liquid cooling solution they're using on this test bed [1]. For this processor to continue dissipating 335W without overheating, it needs to dissipate that 335W of heat energy into hundreds of cubic feet of air every minute. Six fans push and pull the air through hundreds of tiny fins, which are conducting heat out of liquid coolant continuously pumped through tubes soldered to those fins and through a giant copper waterblock millimeters from the point where this heat is produced. And even with all that, it probably can't actually run at 335W continuously. You don't have a $200 cooling solution on every foot of your battery cables, they're wrapped in PVC or silicone, buried in conduit, in plastic wire wrapping, or through insulation in a wall cavity. As an EE, those rules are painfully applied to microprocessors, such that a ton of PCB design energy, mechanical constraints on packaging, and other costs are spent removing that heat. You have the convenience of just buying the recommended AWG4 cables and it just works, regardless of the severely sub-optimal thermal design you might employ when running that cable. In theory your batteries could pass 255A through a single strand of bare copper from an Ethernet cable for a few tens of milliseconds before it went into thermal runaway and liquefied/evaporated. Remove that heat fast enough (liquid nitrogen?) and you could run tiny cables to your battery storage. [1] https://www.ekwb.com/shop/ek-aio-elite-360-d-rgb https://www.ekwb.com/shop/ek-aio-elite-360-d-rgb