Detached Garage Sub Panel Wiring. SUB-PANEL IN GARAGE with equipment grounding bus bonded to sub-panel enclosure. Connect the red and black wires to the two screws on the hot bus strip of the subpanel.
The sub-panel neutral is tied to the main panel neutral bus via the 2 conductor AND the sub-panel box is connected to the ground buswire rod combo. The electrical wiring must be placed at a greater depth with a separation. Underground branch circuit feeding a detached garage.
I built a detached garage next to my house and just got done running the wires from the main meter panel to the subpanel inside the garage and the setup is a follows.
Aluminum is a lot cheaper especially for long runs but the size of wire needed for a typical 100 amp sub panel in garage or shed may exceed what the sub panel can handle. Installing a Sub-Panel In a Detached Garage Step 1. SUB-PANEL IN GARAGE with equipment grounding bus bonded to sub-panel enclosure. I have a total of 4 wires coming from the main.