In - service testing will involve the following:

   a) Preliminary inspection.

  b) Earth continuity tests (for Class 1     equipment).

  c) Insulation testing.

 (which may sometimes be substituted by earth leakage measurement).

                                   d) Functional checks.

 

Sometimes however additional testing may be performed such as Flash Testing at a higher voltage, this is performed rarely and only in cases following a substantial repair.

A Quick Reference to Terms.

Class 1 Equipment = Equipment in which protection against electric shock does not rely on basic insulation only but which includes means for the connection of exposed - conductive - parts to a protective conductor in the fixed wiring of the installation.

Earthing = Connection of the exposed - conductive parts of electrical equipment to the main earthing termination of an electrical installation.

IET = Institution of Engineering and Technology. ( Formally IEE )

IEE = Institution of Electrical Engineers.

Electric Shock = A dangerous physiological effect resulting from the passing of an electric current through a human body or livestock.

Insulation = Suitable non - conductive material enclosing, surrounding or supporting a conductor.

Protective Earthing Conductor = A conductor used for some measures of protection against electric shock and intended for connecting together the exposed - conductive - parts of electrical equipment to the main earth terminal of an electrical installation.

 

 

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