Detached Garage Sub Panel Wiring

Sub panel in garage with equipment grounding bus bonded to sub panel enclosure.
Detached garage sub panel wiring. I will be installing a subpanel in a detached garage. I would like to have 2 15 amp circuits and 2 20 amp circuits in the garage. I pulled 3 2. If above assumptions are correct garage with sub panel is a sectional switch to segregate a section of the building and as such bye laws applicable for power distribution in a big building as single unit are applicable.
Detached garage supplied by a four wire feeder minimum 6 conductor to ele ctrode metal underground piping. It s a simple job that will require only a few hours of work but it s important to follow all instructions and safety procedures. Second is that the sub panel in garage is provided for ease of local operation and isolation. I am in need of some help choosing the correct wire for my detached garage.
I ran 1 5 conduit 42 ft worth and buried it 18. The subpanel will be 60 amp. Note 3 when the detached garage main panel is supplied by a feeder that has no equipment grounding conductor ran with that feeder from the main structure usually dwelling to the detached garage then the neutral bar and equipment grounding bar must be joined or married together as one entity usually by a jumper bar attached between the two bars or by a jumper bar connecting the. Building a garage sub panel is a convenient way to be able to shut off the power source to a garage especially a garage that is detached from the house.
A breaker box in a detached garage is usually a sub panel to the main circuit panel in the home. Here is my mistake everything works but i think this is a code problem. For electrical wiring codes nec. The advantage of installing a breaker panel in the garage is that it allows you to have multiple circuits available while only needing to run one line to the garage from the house.
How to install a subpanel fully detailed step by step. I ll be using pvc underground for the wiring. When no underground piping is present install a minimum of 8 foot long ground rod. The garage is about 30 from the main panel in house and i will of course get an exact length before selecting the proper gauge wiring.
Isolated neutral bus for the neutral conductors white wires main breaker. I have added a 100a 240v sub panel to my detached garage.