Let me describe the installation. This is a manufactured home. The Service equipment was over 30' away so a disconnect was installed on a 4x4 post next to the home URD was run from the service equipment to the disconnect in PVC. From the back of the disconnect a #2 SER was run under the manufactured home to the 1.5" stub from the panel and they used a 1.5" female PVC adapter and screwed in a 1.5" SER connector into it.They used a PVC 2 hole strap to support it to the frame.