A dedicated circuit is one branch circuit that serves one appliance and nothing else. Its own breaker in the panel, its own conductors, its own neutral, and no other outlets or lights sharing the run. That is the whole idea, and it is why a dedicated circuit fixes problems that swapping a breaker never will.
Why appliances need one
Appliances need this for two reasons. The first is load: a compressor, a treadmill motor, a well pump, or an induction cooktop draws a large, sustained current, and motors pull several times their running current for the first moment they start. Put that on a circuit shared with the kitchen lights and you get a breaker that trips at the worst moment — which is the breaker doing its job correctly. The second reason is code. Current California code requires a number of fixed appliances to be on their own circuit; in a kitchen remodel the dishwasher and the disposal are the ones that come up most. Rather than recite a list here, we check your specific appliances against the code in force when we pull the permit.
Capacity and the route
On an existing home the job is rarely about the appliance. It is about two questions: does your panel have the capacity and a place to land a new breaker, and can we get a route from that panel to where the appliance actually sits. Those answers look different in a 1940s bungalow with plaster and lath and no attic above the kitchen than they do in a tract home with an open garage ceiling. Hillside foundations with no crawl access, detached garages across a driveway, and second-story destinations are the routes other shops quote around. Those are the ones we are set up for. You can pressure-test the capacity half yourself with the Panel Load Calculator before you call.
What is in our scope
On scope: Sunrise holds a CSLB C-10 (Electrical) license, #C10-1097237, and the circuit, the breaker, the disconnect, and the connection are all in-house work. Two boundaries are worth stating plainly. For a heat pump or an air handler we run the circuit and set the disconnect while your HVAC contractor sets the equipment, because the equipment side is C-20 scope. For a water heater the plumbing and any gas line belong to a C-36 contractor. We coordinate with either one, and we say up front which parts of your project are ours.