Sub Panel Wiring Diagram
Adding a sub panel gives a garage, a shop, or a finished basement its own breakers, so the main panel doesn't run out of slots. ArcSite's sub panel wiring diagram shows how the feeder, neutrals, and grounds land inside the box, with the bonding and multi-wire circuit rules called out.
Key Features
This sub panel wiring diagram includes:
- Feeder entering the top of the panel
- Hot conductors on the main lugs
- Separate neutral and ground bars
- Do-not-bond note at the bonding screw
- EGC (equipment grounding conductor) on the ground bar
- Multi-wire circuits on a handle-tied 2-pole breaker
- Multi-wire neutrals grouped with wire ties
That do-not-bond note matters most, since a bonded neutral in a sub panel puts normal current on the ground wires and the metal box.
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Key Considerations When Installing a Sub Panel
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Frequently asked questions
Should the neutral be bonded in a sub panel?
Can I add more branch circuits to the diagram?
Can the homeowner see this before they sign?
