There are a number of considerations when installing an eGauge, including positioning of CTs, mounting the eGauge, and routing wiring appropriately. The video below discusses these and similar considerations, using visual examples. Of particular concern is determining the correct phasing relationship between the CTs and voltage references. The panel in the video is not live, and local electrical code should supersede any suggestions made in this video. eGauge does not recommend that untrained individuals open or operate inside of electrical enclosures.
Note that EG4xxx meters and EG30xx meters using a direct Ethernet connection must be installed in an external enclosure.