poldim

Looks like SQD advertises the same thing, but the 1ph vs 3ph is probably a problem with the NEC. I'd like to find a code-compliant way...

AFAIK, this is really the only interlock available that would make sense as most of the others appear to be design to be mounted...

Do you mean NQ or from other manufacturers?

Need to find out how willing the SF DBI are to things like these....... AutoCAD

I've looked at my QO panel and it looks like 2 min with a grinding wheel can make it split bus, just need to remove the plastic, cut...

Yea, this is basically what I'm thinking Looks like one of the few still available: QOGP3P604436200P

Thanks for the suggestion:

The mechanical interlock needs to sit between the two breaker's its interlocking, so this means it has to straddle the split with the...

yes

I'm curious if anyone has used a split bus panel and had it pass inspection. The interwebs points to 408.36 of the NEC but I don't see...

Are there any places to get the DWG files of sample permit sets?