| This suggestion presumes the panel is "Flush-mounted" inside the wall----
A steel plate 6" in width , and the lenth, the width of the panel plus 1-1/2 "
You have to fasten the plate to the panel so that the the top (bottom?) of the plate is flush with the top of the panel , and each end of the plate overlaps each panel edge by 3/4".
You will need to punch K-O's in the plate for steel conduit nipples which are threaded into "LB" condulets ; possibly 4 1" LB's would suffice for the number of conductors being extended from the panel. The number and the size of the LB''s would depend on what is involved in routing the conductors in raceways to the new panel. Possibly PVC condiut could be used for the raceways.Include a Green Equiptment Grounding Conductor between the panels.
This is a "rough" idea which certainly has to be fine-tuned, but I hope the basic concept is one that will solve you problem with minimal trouble and expence |