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2. High-voltage cable - Wikipedia

   en.wikipedia.org/wiki/High-voltage_cable

   High voltage is defined as any voltage over 1000 volts. [3] Those of 2 to 33 kV are usually called medium voltage cables, those over 50 kV high voltage cables.. Modern HV cables have a simple design consisting of a few parts: the conductor, the conductor shield, the insulation, the insulation shield, the metallic shield, and the jacket.

3. Isolation transformer - Wikipedia

   en.wikipedia.org/wiki/Isolation_transformer

   A 230 V isolation transformer A simple 1:1 isolation transformer with an extra dielectric barrier and an electrostatic shield between primary and secondary. The grounded shield prevents capacitive coupling between primary and secondary windings.

4. IDC (electrical connector) - Wikipedia

   en.wikipedia.org/wiki/IDC_(electrical_connector)

   An insulation-displacement contact (IDC), also known as insulation-piercing contact (IPC), is an electrical connector designed to be connected to the conductor(s) of an insulated cable by a connection process which forces a selectively sharpened blade or blades through the insulation, bypassing the need to strip the conductors of insulation ...

5. Flyback transformer - Wikipedia

   en.wikipedia.org/wiki/Flyback_transformer

   There is usually a thickly insulated wire from the LOPT to the anode terminal (covered by a rubber cap) on the side of the picture tube. One advantage of operating the transformer at the flyback frequency is that it can be much smaller and lighter than a comparable transformer operating at mains (line) frequency.

6. Appliance classes - Wikipedia

   en.wikipedia.org/wiki/Appliance_classes

   In Europe, a double insulated appliance must be labelled Class II or double insulated or bear the double insulation symbol: ⧈ (a square inside another square). As such, the appliance should not be connected to an earth conductor because the high-impedance casing will cause only low-fault currents that are unable to trigger the fusible cut-out.

7. Insulation system - Wikipedia

   en.wikipedia.org/wiki/Insulation_system

   The electrical insulation system for wires used in generators, electric motors, transformers, and other wire-wound electrical components is divided into different classes by temperature and temperature rise.