How to Install the GEM120CT Meter

How to Install the GEM120CT Meter

Overview

This guide explains how to wire and mount the GEM120CT correctly to ensure accurate readings.

Step-by-Step Installation

  1. Isolate power before working on the system.
  2. Mount the GEM120CT on a DIN rail in the distribution board.
  3. Connect voltage references:
Meter Terminal
Description
Cable
3
Neutral (N)
Neutral supply
4
Live (L1)
Live grid feed
  1. Install CT clamp:
    • Place around the live cable only (not neutral).
    • Arrow on clamp must face toward the property load.
    • Connect CT clamp wires to the bottom of the meter:
Port
Wire
Function
1
White
CT +
2
Black
CT –

  1. Tighten all terminals and ensure the CT clamp is fully closed.
  2. Power on the system and confirm LED activity.

Notes

  • Do not extend or shorten CT wires as this will cause inaccurate readings.
  • Use a single live conductor within the clamp only.


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