I have 240mm^2 cable and 240mm^2 connectors; this combination works as designed. Another engineer wants to use 500kcmil cable and the 240mm^2 connector combination. I would rather use the corresponding cable with the connector than awg with the mm connector. It is almost a fit but not exactly. The difference is: the 240mm^2 cable has to go into conduit for a short run whereas the 500kcmil cable can lie on the ground for the short urn without conduit. Either cable is fine, but I want to make sure that the connector to cable interface is within code. Comments?