I'm installing a 7.5 hp phase converter (single to three phase) for a 3 phase drill press and dust collector in my workshop. It looks like I need to run 8-3 from the converter into the panel, with L1 and L2 connected to a 40 amp, 2 pole breaker, and L1 and L2 (10-3 or 12-3) into the panel from the loads, also to separate breakers. L3 from the converter and the loads are supposed to be spliced with a split-bolt connector. The question is - can I splice the L3 wires inside the panel with the split bolt? Or does it need to be done in a separate box? Thanks - I appreciate any help.