Let me start by saying this is my first post and I am generaly a residential electrician specializing in old home rewires. With that said I have been asked to run a 100 amp subpanel for a new computer room at a local school. All circuits in panel will be 120 volt.
The closest panel to tap off of is 160' away and is a 3 phase y 225 amp max panel. I am thinking that I need to run a 1/O AL 4 wire w/ground SE from panel to panel. SE because above the drop ceiling is packed and no room to run pipe. The breaker obviously needs to be a 3 phase y coming out and the sub panel needs to be 3 phase y main lug.
Now I ask those of you who are commercial electricians am I about to make a mistake and if so what should I be doing here. I am not very familiar with 3 phase or runs this long, as I said I am a residential electrician I am only doing this job as a favor. Any input would be appreciated.
The closest panel to tap off of is 160' away and is a 3 phase y 225 amp max panel. I am thinking that I need to run a 1/O AL 4 wire w/ground SE from panel to panel. SE because above the drop ceiling is packed and no room to run pipe. The breaker obviously needs to be a 3 phase y coming out and the sub panel needs to be 3 phase y main lug.
Now I ask those of you who are commercial electricians am I about to make a mistake and if so what should I be doing here. I am not very familiar with 3 phase or runs this long, as I said I am a residential electrician I am only doing this job as a favor. Any input would be appreciated.