We are planning a large remodel in our home. As part of creating a basement apartment we have to relocate the electrical panel so that it's accessible to us as well as the tenants. We will do that by moving the panel a few feet and flipping it to face the outside of the house so it can be accessed from the exterior.
Here's the question: Our GC tells us that as part of moving the panel we need to run new wiring for all existing circuits in the house. The reason for this is that we are effectively establishing new service and the existing wiring can't be extended and/or reused. Is that correct? Is there a way we can meet code and not have to run new wiring for every circuit in the house?
Update: Reading the answers to Relocating Main Panel, seems like it would be possible to install junction boxes and use them to splice the wiring for the existing branch circuits. Is this correct? I'm located in Seattle if it makes a difference.