The visual inspection, examination, marking, documenting, and recording of the results are all performed in three steps.

In an industrial setting, where high voltage is needed to run heavy machinery, 3 phase switch sockets are common.

The following tests are performed by Test and Tag technicians as needed:

• Earth Bond
• Insulation Resistance
• Leakage Test

The results of each test will be evaluated by the Test and Tag technician to decide a PASS or FAIL.
Electricity is associated at either 230-240 volts (single phase) or 400-415 volts (three phase) (3 Phase). Single-phase systems typically have three wires: active, neutral, and earth. Three phase circuits usually have five wires: three actives (known as Phases), a Neutral, and an Earth.