>>532509218
The main reason to get kovarex is nuclear fuel for trains, and now it doesn't even take yellow/purple (just space science, which is free).
I normally wait until I have kovarex anyways since that's about when my power gets strained, the centrifuges themselves are when power demand starts in SA. It was different in vanilla, but old adages don't always hold in SA.
>>532509504
The inserters immediately after the u-235 output inserter. If you feed the machine at the bottom, they'll all eventually turn on (although manually fiddling with the 235 to get them all running gets them ramped faster)