Ravenvalor
Senior Member
- Location
- Piedmont region of NC
Hello,
I am considering installing a 3-phase, 208-volt, 100-amp feeder circuit to a retail space on a flat roof in central North Carolina. I rarely see circuits this big and this long on roofs. Can you guys please give me some design tips and do's and dont's when designing and installing this. The roof is only 15' off of the ground and a roof installation will be much simpler than an installation inside the building. I imagine conductor size will be much larger due to the temperature. I can see emt rusting while pvc being expensive due to all of the expansion joints. Are those the reasons why roof top larger circuits are rarely seen in NC?
Thanks for all the help.
I am considering installing a 3-phase, 208-volt, 100-amp feeder circuit to a retail space on a flat roof in central North Carolina. I rarely see circuits this big and this long on roofs. Can you guys please give me some design tips and do's and dont's when designing and installing this. The roof is only 15' off of the ground and a roof installation will be much simpler than an installation inside the building. I imagine conductor size will be much larger due to the temperature. I can see emt rusting while pvc being expensive due to all of the expansion joints. Are those the reasons why roof top larger circuits are rarely seen in NC?
Thanks for all the help.