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eGauge Meter Communication

eGauge meters can output BACnet information via MS/TP and IP (UDP)

How much data (bandwidth) does the eGauge use?


The eGauge meter stores all data locally on the device itself, meaning it does not need to be connected to the internet and the proxy server for functionality. Because of this, data is only transferred when a user visits the device interface, or if data sharin...

Why do I get the error "Sorry, you are not authorized to make this change"?


This occurs when the username and password entered is valid, but the eGauge doesn't accept those credentials for making changes. This will happen for one of two reasons:  The user you authenticated as does not have privileges to save settings. You can see yo...

How do I change the color or style of my lines?


The default colors for Usage and Generation can be changed from the Preferences menu, under Settings -> Preferences. This can be helpful for users with red/green colorblindness. Note that this is a global change - every register without a custom line style wil...

CT selection guide

CT FAQs and other information

In this article... Introduction Interpreting CT models and SKUs Determining how many CTs to use Selecting the mechanical dimension of the CT Selecting the current rating of the CT Rope CTs Direct Current CTs Extending CT leads Three-phase inverter no...

What CT do I choose from the CT drop-down selection?


You may also wish to refer to our CT Selection Guide for additional information.  For firmware versions prior to v2.16, the CT is identified by the amperage rating of the installed CT (not the amperage rating of the circuit being monitored). Starting in firmwa...

What password do I use to save a change to the settings?


For meters purchased on or after Jan 2021: Meters shipped after January 2021 will come with a random password assigned to the meter at the time of manufacture. This password is printed on the side of the meter opposite the CT ports. Assuming the meter still h...

How does proxy server connectivity work?


For more information about the proxy server see this article. Information about all network connections may be found here. The eGauge proxy server is a free, best effort service provided by eGauge to allow easy access to the eGauge interface from anywhere on ...

How do I check HomePlug communication speed?

eGauge Meter Communication HomePlug power-line communication

If the eGauge interface can be accessed, it is possible to view the HomePlug communication speed. Navigate to Settings -> HomePlug or use this link: (replacing DEVNAME with the device name of your eGauge). Th...

How do I configure a static IP address?


If in doubt, a static IP address is most likely not required. eGauge support can assist with setting a static IP address, but cannot guarantee that the values used in that address are correct for the network. Please refer to the document below for additional i...

Checking and upgrading firmware

eGauge Meter UI

Table of Contents OverviewChecking Current Firmware VersionUpdating FirmwareVideo TutorialUpdating Firmware Without an Internet Connection Overview eGauge releases periodic firmware updates to address bugs, add functionality, and address security issues. De...

Panel phasing and eGauge installation

eGauge Installation

Correct phasing (associating a CT with the correct voltage reference) is a critical component of the eGauge installation. Ideally, phasing should be verified using a handheld multimeter to determine the phase of a conductor monitored by a given CT. Generally t...


Can the HomePlug adapter be connected to a power strip?

eGauge Meter Communication HomePlug power-line communication

HomePlug adapters should be connected directly into a wall outlet. If that is not an option, it is possible to plug the HomePlug into a power strip provided the power strip has no integrated surge suppressor. Most power strips designed for computers have integ...

What are some causes of HomePlug communication issues?

eGauge Meter Communication HomePlug power-line communication

Note that a combination of the issues below may be involved with any communication problem. Also, there may be factors impacting eGauge/HomePlug communication not presented below. GFCI Outlets Almost all GFCI outlets will cause issues, but will not necessari...

(EG4xxx) How do I interpret the status toolbar on the LCD?


The status toolbar at the top of the LCD display provides a quick overview of device status. When navigating the LCD menus this information is usually available, although a few menus won't display the status toolbar. The page numbers in the top right corner ar...

Serial and USB485

eGauge Meter Communication

General USB485 and serial information

Can I connect to the eGauge without a network?


You may also refer to the complete guide, Directly Connecting to the eGauge Below are the recommended steps to establish communication with an eGauge when the HomePlug adapter or eGauge Ethernet port is directly connected to the Ethernet port of a computer, a...


eGauge Meter UI Mobile and NG interface

Overview Available in firmware v4.1 and newer, the eGauge interface has a new mobile-friendly dashlet interface available to use on mobile and desktop browsers. This interface (referred to as the Mobile-Friendly interface or the NG User Interface) is designed...

What settings should I avoid changing?


The eGauge has a number of settings which can be modified by the end user. Some of these are relatively benign, while others can impact accuracy or even break network connectivity outright. This article is intended to provide first-time users with a brief over...

Zero out data/spikes tutorial

Advanced eGauge Operation

Devices on firmware older than version 3.01 may experience a phenomenon where register configuration changes that require a reboot cause unusually high readings to appear in the minute following the change. These readings are referred to as spikes, since they ...

What is excess?


Excess is a value that results from a master eGauge losing contact with certain remote registers, such as power values from a remote, secondary eGauge. It generally does not appear on eGauges without remote devices. When a master eGauge re-establishes communi...


eGauge Meter Communication

Information about the eGauge meter's JSON-based API

Power Relay Module (PRM3) Software Documentation

Other Hardware Documentation

Software documentation for the Power Relay Module PRM3

power relay module

Lua Scripting

Advanced eGauge Operation

Sensor Hub and Sensors

eGauge Installation

Mobile and NG interface

eGauge Meter UI


Advanced eGauge Operation

All about eGauge Alert functionality

USB thumb-drive functionality

Advanced eGauge Operation

eGauge Core/Pro have USB and thumb-drive storage functionality

I've erased all of my data, how can I get it back?


Overview From firmware version 3.6.3 onward, the eGauge meter will ask the user whether they want to clear historical data after making changes to the Installation page (located at Settings -> Installation). This is a convenience feature for new installs. Sin...