Our main building has a 120/208 Volt, 3Ph, 4W. electric service. We would like to install a panelboard in a remote building. It does not have any 3Ph. loads. According to the NEC must a 120/208 Volt, 3Ph, 4W. panelboard be installed in remote building or would a 120/208 Volt 1Ph. panel be compliant?