katwalatapan
Electrical
- Aug 9, 2011
- 153
Hello,
I'm working on a plan to install 4kW, 1-phase, 240VAC, grid-tied, micro-inverter based, Photo-Voltaic System no a rooftop in a multi-unit residential building. I wanted to inquire if it is an acceptable practice to run the AC cables from the rooftop junction box to the PV AC Disconnect on the buiding's exterior wall, in EMT conduit installed inside the building's exterior wall. Exterior wall cladding work is also planned around the same time, so I wanted to inquire if it is acceptable to run the EMT conduit inside of the exterior wall.
This work is conducted on an existing building, so going through the attic and ceiling space of the building is not an option. Another alternative could be installing the EMT conduit from the rooftop junction box on the surface of the exterior wall. I'd appreciate your comments/suggestions on the best practice to install the EMT conduit from the rooftop junction box to the PV AC disconnect on the exterior wall. Also, is rigid EMT conduit preferable or flexible, galvanized steel conduit?
Thank you.
I'm working on a plan to install 4kW, 1-phase, 240VAC, grid-tied, micro-inverter based, Photo-Voltaic System no a rooftop in a multi-unit residential building. I wanted to inquire if it is an acceptable practice to run the AC cables from the rooftop junction box to the PV AC Disconnect on the buiding's exterior wall, in EMT conduit installed inside the building's exterior wall. Exterior wall cladding work is also planned around the same time, so I wanted to inquire if it is acceptable to run the EMT conduit inside of the exterior wall.
This work is conducted on an existing building, so going through the attic and ceiling space of the building is not an option. Another alternative could be installing the EMT conduit from the rooftop junction box on the surface of the exterior wall. I'd appreciate your comments/suggestions on the best practice to install the EMT conduit from the rooftop junction box to the PV AC disconnect on the exterior wall. Also, is rigid EMT conduit preferable or flexible, galvanized steel conduit?
Thank you.