I don't do much residential design, so I would appreciate some confirmation that I'm reading this correctly;
1. For a residential detached garage, the minimum disconnect size is 60 amps, but the feeder can be smaller, and only needs to be sized for the load.
2. The feeder needs a separate ground wire (previous codes allowed the grounded conductor to be used, but that is no longer allowed.)
3. A concrete encased electrode (CCE) is typically required if its new construction with a new footing in contact with the ground.
4. A #8 cu wire can be ran to the CCE, assuming it connects to 20' of rebar, and assuming the feeder is 60 amps or less.
5. If the CCE is installed, no supplemental electrodes are required.
Thanks;
Steve
1. For a residential detached garage, the minimum disconnect size is 60 amps, but the feeder can be smaller, and only needs to be sized for the load.
2. The feeder needs a separate ground wire (previous codes allowed the grounded conductor to be used, but that is no longer allowed.)
3. A concrete encased electrode (CCE) is typically required if its new construction with a new footing in contact with the ground.
4. A #8 cu wire can be ran to the CCE, assuming it connects to 20' of rebar, and assuming the feeder is 60 amps or less.
5. If the CCE is installed, no supplemental electrodes are required.
Thanks;
Steve
