Expanding existing circuits & keeping power for inspection
I am roughing in a basement that already has some existing lights and receptacles. I plan to add to and alter what exists, in addition to running some new circuits. This includes, in a few spots turning an existing single gang into a double or triple gang setup.
It's my understanding that I should not have any lights or receptacles connected when I am inspected, meaning I would need to lose power to my existing circuits.
Do I really need to un-power all of my existing circuits and get inspected in the dark? For the existing circuits, can I make my upgrades to larger boxes and power them up before the inspection or is that a big red flag?