# Initial Configuration Steps The eGauge must be configured for the system monitored or data will be invalid.

Meters sold after June 1, 2023 may default to the [Modern User Interface](https://kb.egauge.net/books/egauge-meter-ui/page/modern-user-interface). After logging into the eGauge meter, choose **Setup >> Other Settings** from the main menu to access the configuration settings and continue as outlined below.

To configure the eGauge, log on to it ([see this KB article](https://kb.egauge.net/books/egauge-meter-configuration/page/accessing-egauge-interface "Accessing eGauge Interface")) and navigate to Settings -> Installation. ![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25013657210/original/f38vXdRuxVTkfxnAkQPK_Y0i9tn1u5ydpg.png?1571771485) ![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25013657223/original/m05XMCRB_3Mb8enT7Z74opQLnNjm-DzJ9Q.png?1571771534) --- The full configuration guide can be accessed at [egauge.net/help/config.](http://egauge.net/help/config) Line diagrams with example configurations can be found in Section 2 Configuration Examples, starting on page 13 (as of time of writing this article). Potential Transformers ![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25013653698/original/i1ZvE0ZcHfX-6dJ6yYFOA2XqqMQTR8M3Dw.png?1571757159) If step-down transformers are used, select the appropriate transformer ratio or type here. E.g., 480:120 for a generic 480V to 120V transformer, or FDT-480-120 for the Functional Devices transformer provided by eGauge Systems. If eGauge is connected directly to the systems voltage, leave this as "direct (no PT)" ## Sensors/CTs ![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25013653844/original/ki4q56xrnjiQG7Wbsnk6uMwaavcLIALP8g.png?1571757269)*Note: in firmware v4.0 and greater, "CT" has been changed to "S" for Sensor. For example, CT5 = S5, and CT12 = S12*. The current transformers in each slot are selected here. [See this KB article](https://kb.egauge.net/books/configuration/page/what-ct-do-i-choose-from-the-ct-drop-down-selection) for how to understand the drop-down menu options ## Remote Devices ![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25013653918/original/PMaZ6xXViPkGHy0MpZRW5q5XEw6V1PYXlQ.png?1571757426) This can be left alone if no remote devices are used. ## Registers ![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25013653948/original/ocFUtGgdkktabZB2rxLUinhnoR8tOmyQZA.png?1571757526)*Note: in firmware v4.0 and greater, "CT" has been changed to "S" for Sensor. For example, CT5 = S5, and CT12 = S12*. Registers can be deleted by clicking the \[x\] to the right of the register name. For each measurement, add a register. Click "Add Component" to add a CTxLine combination. This example shows three-phase Grid being monitored by CT1, CT2, and CT3. Solar 1 is monitored by CT4 and CT5, and is feeding on L1 and L2. Solar 2 is monitored by CT6 and CT7, feeding on L3 and L1. It is vital for CTxLine combinations to be correct. Visit [this KB article](https://kb.egauge.net/books/egauge-installation/page/panel-phasing-and-egauge-installation "Panel phasing and eGauge installation") on information on phase checking with a volt-meter. #### DC load monitoring If monitoring DC loads using the Ldc voltage input, choose "Ldc" instead of L1, L2 or L3. If monitoring DC loads using an [EV1000 voltage sensor](https://kb.egauge.net/egauge.net/support/m/ev1000), choose the appropriate sensor input (e.g., "S4") instead of Ldc or a line input. ## Total and Virtual Registers ![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/25013654038/original/UcLxOhyZMZ_2QybkmB8kcsjZKyDD6s_FLw.png?1571757890) The Usage and Generation totaling registers determine the red and green areas on the main graph, as well as summary information for Usage and Generation. For Usage in a back-fed system, positive values of Solar (e.g., Solar 1+ ) are added to Grid. In a line-side feed, the negative values would be added to Usage (e.g., Solar 1- ). Generation consists of all Generating loads.