Warning Triple Supply

Warning Triple Supply

SPL339
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Warning Triple Supply Label

This Warning Triple Supply label identifies an electrical installation with three separate sources capable of supplying energy. It provides an immediate warning for electricians, maintenance personnel and emergency responders that isolation may require more than one switching action.

Typical triple-supply combinations

Applications can include installations combining grid supply, solar PV and battery storage, or grid, generator and inverter-derived supply. The actual sources depend on the project and should be individually identified elsewhere in the installation.

Do not assume one main switch removes all power

With three sources present, switching off one supply can leave other circuits or equipment energised. Clear warning identification encourages personnel to locate every relevant source and isolation point before work begins.

Part of a coordinated labelling system

Use this warning alongside source-specific main switch labels, inverter and battery identification, generator labels and the approved shutdown procedure. The label communicates the triple-supply condition but does not define the isolation sequence.

Manufactured in-house by Sign Portal in Australia.

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