One of the configurations in this question on feeding two nearby subpanels from one main breaker has two wires screwed into each lug on one of the subpanels. Do I need to have a two-wire lug like this one
or can get away with something like this
instead? I've managed to find a digital spec sheet for my subpanels here (both are identical). I intend to have a 6GA Cu and a 2GA Cu wire entering each lug and it seems the current lugs are large enough to accommodate both wires, but I don't know if it's code legal.
Since I don't know when I'll get to feeding each subpanel from a dedicated breaker in the main panel, I'd rather make it code legal in case it stays that way for a while.