What branch circuit means
A branch circuit is the wiring from the last breaker or fuse out to the outlets it feeds.
Where it matters on a electrical job
Adding outlets to an existing branch circuit is cheaper than a new circuit, but only if the load allows. Kitchens, bathrooms and laundry have their own required circuits, so check before tapping into one.
What the model code says
- The code defines a branch circuit as the conductors between the final overcurrent device and the outlets. (IRC 2021, Chapter 35)
- Kitchen countertop receptacles are fed by at least two small-appliance branch circuits. (IRC 2021, Chapter 39)
Check which code edition your building department enforces for branch circuit before you quote.
What it costs
For branch circuit, the closest koira.ai price is the electrical outlet installation cost guide, near $190 for a typical job and $130 to $260 for most. The guide shows its sources and what moves the price.
Work it out
- Cost guide: Electrical outlet installation cost
- Licensing: Electrical license rules by state
- Tools, templates and guides: Free electrical resources
Sources: 2021 International Residential Code, Chapter 35, Electrical Definitions (ICC); 2021 International Residential Code, Chapter 39, Power and Lighting Distribution (ICC). Checked October 9, 2026.