Go outside and lay the cable into the trench running it all the way to the garage.
How to run electrical wire in garage.
To run the wires inside rigid conduit you ll need a hacksaw a pipe bender capable of bending 1 2 in.
To run a cable from one box to another pull cable off the coil strip at least 8 in.
From inside the basement pull the cable all the way to the main electrical panel.
Run the conduit from the garage to the main panel box.
How to run electrical wire.
Of sheathing through the wire opening in the box.
Dig an 18 inch deep trench for the outdoor electrical wire which you will run from the main panel box to the garage sub panel.
Running electrical wire through the walls and hooking the wire to end point devices is an easy and safe task for a skilled do it yourselfer.
Of sheathing off the wires and thread the wires and about 1 2 in.
Untwist the cable and staple it at least every 4 ft.
Rigid conduit with an outside diameter of 3 4 in and a fish tape long enough to reach through the buried pipe.
At the garage repeat steps 3 through 7 to install the plastic conduit and cable.
Use 1 1 4 inch pvc conduit for a 100 amp sub panel or 1 inch pvc conduit if the sub panel is 50 amps or less.
This list should include lighting fixtures and light switch locations general purpose outlets and receptacles that will be located so that access will not be blocked by obstacles such as garage shelving.
These instructions assume that there is a closed wall between the service panel and the device that will be wired up.