I am planning a remodel of my home in tucson and I have to relocate the existing electrical supply as the cable is in the way of new foundations. The existing panel still needs to be live until I have finished the remodel, should I extend all the circuits to the new panel or turn the old panel into a sub panel and if so what size cable /conduit should I use, the distance is 45 ft over ground, thanks david cross

I would run a temporary feed to the existing panel, or a permanent one, which ever works best.

Can't help with the size wire and conduit, since we have no idea what size panel or service the old system is.