Main Earth Electrode
The main earthing conductor shall have a permanent label attached at the connection to the earth electrode with a legible warning against disconnection in the following form:
WARNING: MAIN ELECTRICAL EARTHING CONDUCTOR - DO NOT DISCONNECT
Refer to the Australian wiring rules: AS/NZS 3000 - Clause 5.5.1.3
Here are some examples of compliant earth electrodes and labelling:
