Garrison
Member
- Location
- Chicago, IL
We have a small M215 based system installing on a garage that is remote from the main building. The planned point of interconnection is at an existing 100A, 240V subpanel located in this garage. The issue of concern is that this panel has only two hots and a neutral, but no EGC and no ground bus. Conduit for feeder cables is in the ground for part of the run, but then the three cables are direct buried to the home. There is a good amount of concrete in between the two buildings which makes adding an EGC challenging.
To resolve this issue my electrician suggested we install a ground rod at the existing subpanel in the garage, to ground both the existing panel as well as land our combined GEC/EGC from the M215/array.
There is no inspection required in this area, so my goal is to ensure that both our installation as well as the electrical service are safe, but not necessarily satisfy the Code (although it would be ideal if we could do both). What do you think? Should I be concerned, or could this solution be safe and functional?
Thank you for your thoughts.
To resolve this issue my electrician suggested we install a ground rod at the existing subpanel in the garage, to ground both the existing panel as well as land our combined GEC/EGC from the M215/array.
There is no inspection required in this area, so my goal is to ensure that both our installation as well as the electrical service are safe, but not necessarily satisfy the Code (although it would be ideal if we could do both). What do you think? Should I be concerned, or could this solution be safe and functional?
Thank you for your thoughts.