How to Install an Electrical Subpanel
A neatly wired electrical panel is safer and easier to troubleshoot.
Synopsis: Electrician CJ Nielsen describes how to correctly wire and label an electrical subpanel. He begins with how to pull the cables to the panel, or load center. He then works step by step through landing the grounds, the subfeed, and the neutrals, before installing the breakers and landing the hots. A series of photos show the systematic process and how to keep the subpanel organized with zip ties and labels.
When I was called to fix a wire that a builder had accidentally cut while repairing a deck outside of San Francisco, I could tell right away the home had some problems. The house was decades old and still beautiful on the outside, but somebody, possibly a former owner, had spliced numerous new lines into the original wiring. The purpose was likely to add lights and outlets (including some on the deck), hence the unprotected wire cut by the…